Dr. S.B. Rai

Retired Professor
Ph D (BHU)
Contact Information:
Tel. +91 542 2307308 (offi.), 2570711 (Res.) +91 9415695601(M), Fax: +91-542-2369889
Email Id:sbrai49@yahoo.co.in

 
 
Academic Qualifications:
 
S. No.DegreeInstitutionYear
1.B.Sc.Gorakhpur University1968
2.M.Sc.Banaras Hindu University1970
3.Ph. D.Banaras Hindu University1974
 
Brief writeup on area of specialization/awards/achievements:
 

We are working on optical properties of rare earth doped glasses, ceramics and nanophosphors since few years. The interesting results obtained during this period are-
(a) Research achievement on Glassy materials
We have developed tellurite and silica glasses with two or three rare earths simultaneously in host. This enabled us to get
(i) Color tuned visible/white light emission from glass on NIR pumping<
(ii) We get extreme UV and visible upconverted radiation on NIR pumping through energy transfer. Some of these emissions also show a tendency of lasing.
(iii) Some of these glasses serve the purpose of the temperature sensor, humidity sensor etc. These results have been published in different journals.
(b) Research achievement on ceramic materials
Rare earth doped borate silicate tellurite glass when heated to appropriate temperature, ceramics are formed. These ceramics in some cases are transparent whereas in other cases they are semi transparent or opaque. An important thing is that nanocrystals develop on its surface or inside. This enhances the fluorescence intensity of the rare earth many fold. We have tried to locate the position of rare earth ion whether it is inside the crystal or on the surface near by or far away from the crystal. It is found that it varies from host to host and also on heating temperature. These results have been published in different journals.
(c) Research achievement on phosphor materials
We have developed rare earth doped nanophosphors using various techniques. Some of these are Gd2O3, La2O3, MAl2O3(M=Ca, Ba, Sr, Mg) hosts. Several rare earth species (Er, Yb, Tm, Ho, Eu, Tb etc) have been doped and their optical properties have been studied. These phosphors show very interesting optical properties. Gd2O3: Er, Yb based phosphor has been found suitable for different applications such as temperature sensor, bioimaging, fingerprint detection, optical switching, optical bistability and also as optical nano heater. Optical heating property is improved in La2O3 based phosphor. Aluminate based phosphor have been found suitable for the interconversion of Tb3+ and Tb4+ in suitable condition. Similar thing is also observed in case of Yb in +2 and +3 state exist together. In addition, we have also prepared metal (Bi, Cu, Si, Au etc) nanoparticles in different media using laser ablation and studied their different properties.

Awards:

  • Received merit scholarship from 1964-1970 from U.P. Govt. from High school to M. Sc. classes.
  • Received Junior and Senior Research Fellowship from CSIR from 1970-1974.
  • Awarded Alexander Von Humboult Fellowship of Germany in 1979.
  • Awarded INSA – DFG Exchange Fellowship in 1993.
  • Awarded Humboult Fellowship for revisit in 1994.
  • Elected Fellow of Laser and Spectroscopy Society of India in 1998.
  • Elected President of Physics Section of Indian Science Congress in 2001.
  • Elected General Secretary in 2001 and Vice President in 2006 of Laser and Spectroscopy Society of India
 
Projects Undertaken as PI/ Co PI:
 

  1. University Grants Commission, New Delhi supported project on “High resolution Spectroscopy of diatomic rare earth oxides (Co-investigator, 1978-1981: Rs. 5 lacs)
  2. Volksvagen Foundation, Germany supported project on “High resolution spectroscopy of molecules of astrophysical interest and atomic collisions (Co-investigator, 1985-1989: Rs. 35 lacs)
  3. Department of Science and Technology, New Delhi supported project on “Laser Spectroscopy of atoms, molecules and ions” (Co-investigator, 1992-1996: Rs. 25 lacs)
  4. Council of Scientific & Industrial Research, New Delhi supported project on “High resolution laser Spectroscopy of atoms, molecules” (Co-investigator, 1996-2000: Rs. 15 lacs)
  5. Department of Science and Technology, New Delhi supported project on “High resolution Laser Spectroscopy of atoms, molecules and ions in different phases” (Co-investigator, 2002-2006: Rs. 35 lacs)
  6. Council of Scientific & Industrial Research, New Delhi supported project on “Optical properties of rare earth doped glasses” (Principal-investigator, 2005-2009: Rs. 18.5 lacs)
  7. University Grants Commission, New Delhi supported project on “ Overtone and combination bands in polyatomic molecules” (Principal-investigator, Rs. 3.5 lacs)
  8. Department of Science and Technology, New Delhi supported project on “Laser Spectroscopy of atoms, molecules and rare earth, transition metal ions doped in glasses and crystal” (Principal investigator, 2007- continued: Rs. 64 lacs)
 
Any additional information:
 
  • Visited Trieste - Italy for two months in Jan 1983.
  • Visited University Kaiserslautern, Germany for two years under Humboldt Foundation Fellowship from March 1983 – February 1985.
  • Visited Trieste – Italy for four weeks in 1988.
  • Visited University of Kaiserslautern, Germany in 1993 for three months under INSA – DFG Exchange program.
  • Visited University of Kaiserslautern, Germany in 1994 for three months under Humboldt Foundation Fellowship.

List of 10 major Publications:

  1. High resolution spectrum of GdO B.R. Yadav, S.B.Rai and D.K.Rai Cand. J. Phys. 54, 2924 (1976)
  2. Two photon spectrum of o-dichlorobenzene I.B. Singh, S.B.Rai and D.K. Rai J. Mol. Spectr. 163, 364 (1994)
  3. High resolution optoacoustic overtone spectroscopy of C2H2 with multipass optoacoustic cell and colour center laser at 1.5microne C. Hornberger, M. Konig, S.B.Rai and W.Demtroder Chem. Phys. 190, 171 (1995)
  4. On the luminescence of Gd3+ doped in oxyfluoroborate glass Akshay Kumar, D.K. Rai & S.B. Rai Solid State Commun. 117, 387 (2001)
  5. Upconversion and thermometric measurements of Er3+ doped tellurite glass K. Singh, D. K. Rai and S. B. Rai, J. Appl. Phys. 82, 289 (2006)
  6. Multicolor upconversion from Tm3+ + Ho3+ + Yb3+ codoped tellurite glass on NIR excitation. N. K. Giri, D. K. Rai and S. B. Rai, Appl. Phys. B: Lasers and Optics 91, 437 (2008).
  7. Multifunctional Er3+, Yb3+ codoped Gd2O3 nano-crystalline phosphor synthesized through optimized combustion route S. K. Singh, K. Kumar and S. B. Rai, Appl. Phys. B: Laser and Optics 94, 165 (2009)
  8. Synthesis, characterization and histopathological study of a lead based Indian traditional drug: Naga bhasma” S K Singh, D N S Gautam, M Kumar, S B Rai, Indian J Phar Sci 72, 24 (2010)
  9. LIBS diagnostics of rare earth doped glasses Y. Dwivedi, S. N. Thakur, and S. B. Rai, Appl. Opt. 49, C-42 (2010)
  10. Magnetic field induced optical bistability in multifunctional Gd2O3: Er3+/Yb3+ upconversion nanophosphor” S K Singh, K Kumar, M K Srivastava, D K Rai, S B Rai, Optics Letters Optics Letters 35, 175 (2010)
Full List of Publications:
  1. On the beta-band system of PO S.B. Rai, K.N. Upadhya and D.K.Rai J.Phys. B. 5, 1038 (1972)
  2. Rotational structure and isotopic shift in the (1,0) band of A-X system of SnF S.B. Rai and J. Singh Spectr. Lett. 5(5), 136 (1972)
  3. Structure and analysis of some bands of the A-X system of SnO molecule J. Singh and S.B. Rai J. Optica Pura Y. Applicada 5, 22 (1972)
  4. On the validity of Tietz potential function S.B. Rai, V.N. Sharma and D.K. Rai Cand. J. Phys. 50, 428 (1972)
  5. Fine structure in the B-X system of SiCl S.B.Rai, J.Singh, K.N. Upadhya and D.K. Rai J.Phys.B. 7, 415 (1974)
  6. Rotational structure in the (2,0) band of the C2?3/2 – X2?1/2 system of SbO S.B.Rai, B.Rai and D.K.Rai Cand.J. Phys. 52, 594 (1974)
  7. Binding energy of lithium halide molecule S.B.Rai and D.K.Rai Chem. Phys. Letts. 30, 325 (1975)
  8. New bands in the A-X system of CuI and its dissociation energy S.B.Rai and D.K.Rai Ind. J. Phys 50, 775 (1976)
  9. Perturbations in the 6th, 8th and 9th vibrational levels of the B2?+ - state of PO S.B.Rai, B.R.Yadav and D.K.Rai J. de Chim. Phys. 73, 90 (1976).
  10. High resolution spectrum of GdO B.R. Yadav, S.B.Rai and D.K.Rai Cand. J. Phys. 54, 2924 (1976)
  11. Dissociation energy of diatomic molecules by mutual adjustment of Morse and Lippincott function B.P. Asthana and S.B.Rai Ind. J. Pure Appl. Phys. 15, 26 (1976)
  12. Bread-down of Born-Oppenheimer approximation in the spectra of some diatomic molecules S.B.Rai, B.R. Yadav and D.K.Rai Sci. Lett. 1, 266 (1978)
  13. Potential energy curves, r-centroids, Frank-Condon factors and their rotational dependence in the A-X and B-X systems of PtH and PtD molecule R.S. Ram, S.B. Rai and K.N. Upadhya Ind. J. Pure Appl. Phys. 17, 844 (1979)
  14. Rotational analysis of the A-X system of CuCl molecule G.P. Mishra, S.B.Rai and K.N. Upadhya Curr. Sci. 48, 625 (1979)
  15. Rotational analysis of the B-X system of GaO molecule B.R. Yadav, S.B.Rai and D.K. Rai Cand. J. Phys. 57, 496 (1979)
  16. Potential energy curve and dissociation energy of oxides, hydrides, deutrides and halides of some rare earths elements B.R. Yadav, S.B.Rai and D.K. Rai Curr. Sci. 48, 475 (1979)
  17. Fine structure in the A-X system of AlCl, its dissociation energy R.S. Ram, S.B.Rai, R.S. Ram and K.N. Upadhya J. de Chim.Phys. 6, 869 (1979)
  18. Fine structure study in the B-X system of CaF R.S. Rai, S.B. Rai and K.N. Upadhya Pramana 13, 149 (1979)
  19. A precise vibrational analysis of the A-X system of AlCl molecule R.S.Ram, S.B. Rai, K.N. Upadhya and D.K. Rai Ind. J. Phys. 53, 56 (1979)
  20. Rotational structure in the A-X system of CuI G.P.Mishra, S.B. Rai and K.N. Upadhya Cand. J.Phys. 57, 824 (1979)
  21. Influence of vibration-rotation interaction on Franck-Condon factor R.Tripathi and S.B.Rai Ind. J. Pure Appl. Phys. 18, 372 (1980)
  22. The band system of DyO B.R.Yadav, S.B.Rai and D.K. Rai Pramana 14, 379 (1980)
  23. Rotational structure in C-X system of CuBr G.P. Mishra, S.B.Rai and K.N. Upadhya Curr. Sci. 49, 142 (1980)
  24. Rotational structure in the C-X system of CaF molecule A.K.Rai, S.B. Rai and D.K. Rai Curr. Sci. 49, 819 (1980)
  25. A precise vibrational and rotational constant for the C-X system of SrF R.S.Ram, K.N. Upadhya and S.B. Rai Pramana, 15, 413 (1980)
  26. Rotational structure in the A-X and B-X systems of CuBr G.P. Mishra, R.Tripathi, S.B.Rai, KN. Upadhya and D.K. Rai J. Mol.Spectr. 85, 245 (1981)
  27. A calculation on the transition probability of A’-X system of YO S.B. Rai and B.R. Yadav J.Sci. Res. 30(1), 301 (1981)
  28. On the X-X system of CuBr K. Perumalsamy, S.B. Rai and K.N. Upadhya Curr.Sci. 50, 79 (1981)
  29. Spectrum of SbO+ molecule R. Tripathi, S.B. Rai and K.N. Upadhya J.Phys. B. 14, 441 (1981)
  30. On the C-X system of HgCl molecule A.K. Rai, S.B. Rai and D.K. Rai Pramana 16, 147 (1981)
  31. On the D-X system of HgCl A.K. Rai, S.B. Rai and D.K.Rai Curr. Sci. 50, 176 (1981)
  32. A-X system of CuCl molecule G.P. Mishra, S.B. Rai and K.N. Upadhya Cand. J. Phys. 59, 289 (1981)
  33. Frank-Condon factor and its rotational dependence in the A-X system of BeAr+, BeKr+ and HgAr+ A.K. Rai, S.B. Rai and D.K. Rai Ind. J. Pure Appl. Phys. 19, 1119 (1981)
  34. A new band system in the red region of CuBr R. Tripathi, S.B. Rai and K.N. Upadhya J. Phys. B. 14, L575 (1981)
  35. On the B2?+ - A2? system of CP R. Tripathi, S.B. Rai and K.N. Upadhya Pramana 17, 249 (1981)
  36. Laser fluorescence spectrum of the A-X and C-X systems of CuI S.B. Rai and D.K.Rai Chem. Phys. Lett. 80, 606 (1981)
  37. Band spectrum of GdO molecule B.R.Yadav, S.B. Rai and D.K. Rai J. Mol. Spectr. 89, 1 (1981)
  38. On the A-X system of YO molecule B.R. Yadav, S.B. Rai and D.K.Rai Acta Cincia Indica 7, 43 (1981)
  39. On the B-X system of SbO R. Tripathi, S.B. Rai and K.N.Upadhya J.Phys. B. 15, 4393 (1982)
  40. The A1? - X1?+, a3? - X1?+ and b3?+ - a3? band systems of AlCl R.S. Ram, S.B. Rai, K.N. Upadhya and D.K. Rai Physica Scripta 26, 383 (1982)
  41. Fine structure in the D-X system of HgCl A.K.Rai, S.B. Rai and D.K.Rai J. Phys. B 15, 3239 (1982)
  42. Ultraviolet bands in HgBr A.K.Rai, S.B. Rai and D.K.Rai J. Phys. B. 16, 1907 (1983)
  43. Laser double-resonance-spectroscopy of molecular Rydberg states W. Demtroder, D.Eisel, B. Hemmerling and S.B. Rai Laser Spectroscopy VI, 250 (1983): Article in Proceeding
  44. Comparative study of Vth group oxide S.B. Rai and D.K.Rai Chem. Rev. 84, 73 (1984): Review Article
  45. Ultraviolet bands in the emission spectrum of the diatomic mercury iodide molecule A.K.Rai, S.B. Rai and D.K.Rai J.Phys. B. 17, 1817 (1984)
  46. On the spectrum of Indium monoxide A.K.Rai, V.B. Singh, S.B. Rai and D.K.Rai Ind. J. Phys. 58B, 246 (1984)
  47. Study of indium monochloride molecule K. Perumalsamy, S.B. Rai, K.N. Upadhya and D.K.Rai Physica 132C, 122 (1985)
  48. Optical double resonance polarization spectroscopy of Rydberg state in Li2 B. Hemmerling, S.B.Rai and W. Demtroder Z. fur Physik A, Atoms and Nuclei 320, 135 (1985)
  49. Laser and collision induced fluorescence from the highly excited states of Li2 S.B. Rai, B. Hemmerling and W. Demtroder Chem. Phys. 97, 127 (1985)
  50. The C-X system of InCl and its dissociation energy K. Perumalsamy, S.B. Rai and K.N. Upadhya Physica 141C, 315 (1986)
  51. Spectroscopic studies of InBr molecule V.B.Singh, A.K.Rai,. S.B. Rai and D.K. Rai Physica 144C, 287 (1987)
  52. Rotational structure in the A-X system of InBr V.B. Singh, A.K.Rai, S.B. Rai and D.K. Rai J. Phys. B. 20, L45 (1987)
  53. Effect of D.C. voltage on the optogalvanic signal of I2 A.K. Rai, S.B.Rai, S.N. Thakur and D.K. Rai Chem. Phys. Lett. 138, 215 (1987)
  54. Effect of laser light on bovine lens Awadesh Singh, S.B. Rai, H.V. Nema and D.K.Rai Proc. of Winter College on Laser Spectroscopy, Trieste, Italy (1987)
  55. Studies in the A-X and B-X systems of InBr V.B.Singh, A.K.Rai, S.B. Rai and D.K. Rai Ind. J. Phys. 63B, 41 (1988)
  56. Energy transfer in dye’s by photoacoustic spectroscopy S. Rai, S.B.Rai, and S.N. Thakur Spectrochim.Acta 44(a), 1473 (1988)
  57. One and two photon optogalvanic spectroscopy of Ne K. Narayanan, G. Ullas and S.B. Rai Chem. Phys. Letts. 155, 55 (1989).
  58. Photoacoustic spectra of rare earth doped tyrosine hydrazide, 8-hydroxyquonoline and ammonium meta vanadate S. Rai, S.B. Rai and S.N. Thakur Proc. Ind. Acad. of Sci. (Chem. Sci.) 101, 351 (1989).
  59. Overtone spectroscopy of benzene derivatives using thermal lensing technique Vipin Prasad J, S.B.Rai and S.N. Thakur Chem. Phys. Lett. 158, 626 (1989).
  60. Dipole moment and spectroscopic constants of silver and copper monohalides I.B. Singh and S.B. Rai Ind. J.phys. 64B, 386 (1990)
  61. Optogalvanic and emission spectroscopy of N2 molecule G. Ullas and S.B. Rai Pramana 36, 647 (1991).
  62. A two step optical double resonance study of FeNe hollow cathode discharge using optogalvanic technique. G. Ullas, S.B.Rai and D.K. Rai Chem. Phys. Letts. 184, 102 (1991).
  63. Two photon optogalvanic spectroscopy of the D-X system of HgBr G. Ullas, V. Kumar and S.B. Rai Pramana 39, 359 (1992).
  64. Optogalvanic spectroscopy of Xe in the 570-630 nm region T.K.Subramaniyam, V. Kumar, S.B. Rai and D.K.Rai Asian J. Phys. 1, 138 (1992).
  65. Two photon optogalvanic spectroscopy of the C-X system of HgBr G. Ullas, S.B. Rai and D.K. Rai J. Phys. B. 25, 4497 (1992).
  66. Rotational structure in the D-X system of CuI G.P. Mishra, V.B.Singh and S.B.Rai Cand. J. Phys. 70, 764 (1992)
  67. Two photon ionization spectrum of aniline I.B. Singh and S.B. Rai J. Sci. Res., 42, 135 (1992)
  68. Optogalvanic detection of NaNe molecule Manoj Kumar, S.B.Rai and D.K. Rai Nuovo Cimeno, 15D, 1445 (1993)
  69. Two photon spectrum of o-dichlorobenzene I.B. Singh, S.B.Rai and D.K. Rai J. Mol. Spectr. 163, 364 (1994)
  70. Optogalvanic spectrum of Al T.K.Subramaniam, S.B.Rai and D.K. Rai Appl. Spectrosc. 48, 160 (1994)
  71. Overtone spectroscopy of benzaldehyde P.K. Srivastava, G.Ullas and S.B.Rai Pramana 43, 231 (1994)
  72. Diode laser overtone spectroscopy of hydrogen sulfide R.Gross Klass, S.B.Rai, R. Stuber and W. Demtroder Chem. Phys. Lett. 229, 609, (1994)
  73. Three photon absorption spectrum of the D-X system of Br2 K.K. Mahato, S.B. Rai and D.K. Rai Ind. J. Phys. 69B 27 (1995).
  74. Fluorescence spectra of some triply ionized rare earth in calibo and silicate glasses Brajesh Sharma, Vipin Prasad J., S.B., Rai and D.K. Rai Solid State Commun. 93 , 623 (1995)
  75. Optogalvanic double resonance spectroscopy of Ne Manoj Kumar, S.B. Rai and D.K. Rai Asian J. Phys. 4 181 (1995).
  76. Near infrared overtone spectrum of C2D2 R. Gross Class, W.Henz, S.B. Rai and W. Demtroder Molecular Phys. 85, 71 (1995)
  77. High resolution optoacoustic overtone spectroscopy of C2H2 with multipass optoacoustic cell and colour center laser at 1.5? C. Hornberger, M. Konig, S.B.Rai and W.Demtroder Chem. Phys. 190, 171 (1995)
  78. Overtone spectroscopy of aniline and haloanilines Vipin Prasad J., I.B.Singh, S.B.Rai and S.N.Thakur Ind. J. Phys. 69B, 315 (1995)
  79. Overtone spectra of methyl and ethyl alcohols and cyanides Vipin Prasad J. and S.B. Rai Ind. J. Phys. 69B, 471 (1995)
  80. Spectroscopic studies of triply ionized Sm in fluorophosphate glass Brajesh Sharma, S.Buddhudu, S.B. Rai and D.K. Rai Ind. J. Mat. & Eng. Sci. 2, 297 (1995)
  81. Diode laser spectroscopy of H2S around 0.82? J.M. Flaud, R.Gross Klass, S.B. Rai, R.Stuber and W. Demtroder J. Mol. Spectrosc. 172, 247 (1995)
  82. Two photon spectrum of p-dichlorobenzene I.B. Singh, S.B. Rai and D.K. Rai Pramana, 45, 271 (1995)
  83. Multiphoton ionization spectrum of I2 I.B.Singh, K.K. Mahato, G.Ullas and S.B.Rai Asian J.Phys. 5, 371 (1996)
  84. Laser optogalvanic studies of discharge plasma T.K. Subramaniyam, D.K. Rai and S.B. Rai Advances in Plasma Science & Technology, Allied Publ. 175 (1996).
  85. Optical properties of Er3+ doped fluoroborate glasses Brajesh Sharma, D.K.Rai and S.B Rai Ind. J. Phys. 70 397 (1996).
  86. Optogalvanic spectroscopy - A review S.B. Rai and D.K. Rai Ind. Nat. Sci. Acad. 62A 475 (1996): Review Article
  87. One photon Rydberg transition from 2Pn levels in Ne Manoj Kumar, G. Ullas and S.B. Rai Physica Scripta 55, 676 (1997)
  88. Effect of glass host on the optical properties of Pr3+ Brajesh Sharma, Akshaya Kumar and S.B.Rai Ind. J.Phys. 72A, 107 (1998)
  89. Stark splitting and energy transfer in Dy3+-Ho3+ and Tb3+-Er3+ doped calibo glass Brajesh Sharma, D.K.Rai and S.B. Rai Pramana 50 405 (1998).
  90. Optical properties of Sm3+ doped in oxyfluoroborate glass K.K. Mahato, D.K.Rai and S.B.Rai Solid State Comm. 108 671 (1998).
  91. Optogalvanic spectroscopy of discharge plasma S.B.Rai J.Sci. Res., BHU 98, 167 (1998)
  92. Overtone spectroscopy of salicylaldehyde P.K. Srivastava & S.B. Rai Proc. Ind. Acad. of Sci. 111, 619 (1999)
  93. Optogalvanic spectroscopy of neon S.B. Rai and S.K. Singh Physica Scripta, 59, 361 (1999)
  94. Optical studies of Pr3+ doped in oxyfluoroborate glass K.K. Mahato, D.K. Rai and S.B. Rai Phys.Stat.Solidi 174 277 (1999).
  95. Polarization and polarisation labelling spectroscopy S.B. Rai Bulletin of Laser & Spectroscopy Society of India, 9, 50 (1999).
  96. Overtone spectroscopy of butanol S.B. Rai and P.K. Srivastava Spectrochim. Acta A55, 2793 (1999)
  97. Frequency of -OH in solutions of n-butanol in CCl4, effect of dilution P.K. Srivastava, D.K. Rai & S.B.Rai Spectrochim.Acta 56, 1283 (2000)
  98. Optical Properties of Tb3+ doped in oxyfluoroborate glass K.K. Mahato and S.B.Rai Spectrochim.Acta 56, 2333 (2000)
  99. Electronic Spectra of dichloroaniline Sanjay Kumar, O.P.Roy and S.B.Rai Asian Chem. Lett 4, 249 (2000)
  100. On the luminescence of Gd3+ doped in oxyfluoroborate glass Akshay Kumar, D.K. Rai & S.B. Rai Solid State Commun. 117, 387 (2001)
  101. Effect of modifiers on the fluorescence and lifetime of Gd3+ ion doped in borate glasses Akshay Kumar, D.K. Rai and S.B.Rai Spectrochim Act. 57, 2587 (2001)
  102. Overtone spectroscopy of some benzaldehyde derivatives P.K.Srivastava, D.K.Rai and S.B.Rai Pramana 56, 823 (2001)
  103. Study of plasma pararmeters of a discharge S.K.Singh & S.B.Rai Ind. J.Phys. 75B, 363 (2001)
  104. Optical properties of Nd3+ in oxyfluoroborate glass Akshay Kumar, S.B. Rai and D.K.Rai Spectrochim Acta 58, 1379 (2002)
  105. Optical properties of Ho3+ doped in oxyfluoroborate glass S.B. Rai, Spectrochim. Acta 58, 1559 (2002)
  106. Spectroscopic studies of bilurubin A.K.Rai, S.B.Rai D.K. Rai and V.B.Singh Spectrochim. Acta 58, 2145 (2002)
  107. Spectroscopic studies of Eu3+ doped tellurite glass Akshay Kumar, D.K. Rai and S.B. Rai Spectrochim.Acta 58, 2115 (2002)
  108. Optical properties of Er3+ doped oxyfluoroborate glass Akshay Kumar, D.K. Rai and S.B. Rai Spectrochim. Acta A 58, 3067 (2002)
  109. Vibrational spectra of 2,3(H) benzoburanone studied by Raman, Infrared spectroscopy and AM1 semi empirical molecular orbital calculations. Vinod Kumar Pandey, V.B.Singh, Amreshwar Rai, B.P. Asthana, S.B., Rai and D.K. Rai Spectrochim.Acta 59, 213 (2003)
  110. Effect of thermal neutron irradiation on Gd3+ ions doped in oxyfluoroborate glass: An infrared study Akshay Kumar, D.K. Rai and S.B.Rai Materials Research Bulletin 38, 333 (2003)
  111. Optical properties of Sm3+ doped in tellurite glass Akshay Kumar, D.K. Rai and S.B. Rai Spectrochim.Acta 59, 917 (2003)
  112. Overtone spectroscopy of aniline and its chloroderivatives Vineet Kumar Rai, D.K.Rai and S.B. Rai Spectrochim.Acta 59, 1299 (2003)
  113. Quantum chemical studies on the conformational structure of bacterial peptidoglycans and action of pencillin on cell wall Amareshwar Kumar Rai, S.B.Rai and D.K. Rai Molecular Structure, 626, 53 (2003)
  114. Spectroscopic properties of Ho3+ doped in tellurite glass S.B. Rai, Anant Kumar Singh, Shiv Kumar Singh Spectrochim. Acta A 59, 3221 (2003)
  115. PE curves and dissociation energies of diatomic indium halide molecules S.K.Mishra, R.K.Yadav, S.B. Rai and V.B.Singh Ind.J.Phys. 77B, 229 (2003)
  116. Overtone spectroscopic aliphatic amines Vineet Kumar Rai and S.B. Rai Ind. J. Physics 78B, 351 (2003)
  117. Optical properties of Dy3+ doped in borate glass, effect of lead oxide Priyanka Srivastava, D.K. Rai and S.B. Rai Spectrochim. Acta A 59, 3303 (2003)
  118. Overtone spectra of aniline derivatives Vineet Kumar Rai, Amareshwar Rai, D.K. Rai and S.B. Rai Spectrochim.Acta A 60, 53 (2004)
  119. Spectroscopic studies of diatomic Indium halides S.K.Mishra, R.K. Yadav, V.B. Singh and S.B. Rai J. P. C. R.D. 33, No.2, 1 (2004)
  120. Optical properties of Sm3+ in borate glass mixed with lead oxide Priyanka Srivastava, S.B. Rai and D.K. Rai Spectrtochim. Acta A 60, 637 (2004)
  121. Spectroscopic studies of Eu3+ doped in oxyfluoroborate glass K.K. Mahato, S.B. Rai and A. Rai Spectrochim. Acta A 60, 979 (2004)
  122. Optical properties of Pr3+ doped borate based glasses Priyanka Srivastava, S.B. Rai and D.K. Rai J. Alloys and Compounds 368, 1 (2004)
  123. Spectroscopic studies of some aliphatic alcohols Vineet Kumar Rai, R.D. Singh, Siya Ram and S.B. Rai Ind. J. Phys. 78B, 81 (2004)
  124. Optical properties of Tb3+ doped in telluride glass Vineet Kumar Rai, D.K. Rai and S.B. Rai, J.Mat. Sci. Lett. 39, 4971 (2004)
  125. Optical transitions of Dy3+ in telluride glass: observation of upconversion Vineet Kumar Rai, and S.B. Rai Solid Stae Commun. 132, 647 (2004)
  126. Overtone bands in phenol derivatives Garima Tripathi, Vineet Kumar Rai and S.B. Rai Ind. J.Phys. 78, 1377 (2004)
  127. Optical properties of Dy3+ doped in oxyfluoroborate glass K. K. Mahato, A. Rai and S.B. Rai, Spectrochim. Acta A 61, 431 (2005)
  128. Vibrational analysis of glycine S K Singh, A K Rai, V. B. Singh and S. B. Rai Spectrochim. Acta A 61, 2741 (2005)
  129. Spectroscopic properties of Pr3+ doped in tellurite glass: A temperature dependent Study V. K. Rai, D.K. Rai and S.B. Rai, Spectrochim. Acta A 62, 302 (2005).
  130. Upconversion in Ho3+ doped in tellurite glass K. Singh, V. B. Singh and S. B. Rai, J. Alloys Comp. 403, 97 (2005)
  131. Optical properties of Eu3+ doped in zinc phosphate glass G. Tripathi, V. Kumar Rai and S.B. Rai, Spectrochim. Acta A 62, 1120 (2005)
  132. Frequency upconversion involving quartat of ions in Pr3+/Er3+ oxyfluoroborate glass A. Rai, K. K. Mahato and S.B. Rai, Chem. Phys. Lett. 414, 222 (2005)
  133. Optical properties and upconversions in Er3+ doped tellurite glass A. K. Singh, D. K. Rai and S. B. Rai, Sol. State Commun. 136, 346 (2005)
  134. Optical properties of Dy3+ in tellurite glass: observation of green-yellow upconversion V. K. Rai, D. K. Rai and S. B. Rai, Opt. Commun. 257, 112 (2006)
  135. Upconversion and thermometric measurements of Er3+ doped tellurite glass A. Kumar Singh, D. K. Rai and S. B. Rai, J. Appl. Phys. 82, 289 (2006)
  136. Absorption, diffused reflectance, transmission and photoacoustic spectra of some Pr salt K Kumar and S B Rai Prog Cryst growth charact mater 52, 99 (2006)
  137. Pr3+ doped lithium tellurite glass as temperature sensor V. Kumar Rai, D. K. Rai and S. B. Rai, Sens. Actu. 28, 14 (2006)
  138. Optical properties and upconversion in Er3+ and Ho3+ doped in LiTeO2 glass A. K. Singh, A. Rai and S.B. Rai, Cryst. Growt. Charact. Mater. 52, 99 (2006)
  139. Infrared, Raman and electronic spectra of Alanine: a comparison with ab-initio calculations S Kumar, A K Rai, S B Rai, D K Rai, A N Singh and V B Singh J Mol Stru 791, 23 (2006)
  140. Upconversion in Pr3+ doped tellurite glass V. K. Rai, K. Kumar and S. B. Rai, Opt. Mater., 41, 151 (2006)
  141. Spectroscopic studies of Er3+ doped calibo glass: effect of addition of bariumcarbonate, energy transfer in present of Sm3+ G. Tripathi, V. K. Rai and S.B. Rai, Opt. Commun. 264, 116 (2006)
  142. Optical properties of Sm3+: CaO-Li2O-B2O3-BaO glass and codoped Sm3+:Eu3+ G. Tripathi, V. Kumar Rai and S.B. Rai, Appl. Phys. B: Laser and Optics, 84, 459 (2006)
  143. Upconversion studies in Er3+ doped teO2+M2O (M-Li, Na, K) binary glass K. Kumar, D. K. Rai and S. B. Rai, Sol. Stat. Commun. 139, 363 (2006)
  144. On the correlation between the thermal and electrical transport ionic conductors S. Chandra, S. B. Rai, P. K. Singh, K. Kumar and A. Chandra, J. Phys. D. (Appl. Phys) 39, 3680 (2006)
  145. Ho3+ sensitized upconverted emission from Er3+ doped TeO2 glass systems A. K. Singh, A. Rai and S. B. Rai, Sol. Stat. Commun. 140, 335 (2006)
  146. Thermodiffusivity and electrical conductivity in fast ion conducting composites: A correlation S Chandra, S B Rai, P K Singh, K Kumar and A Chandra Sol Stat Ion 177, 163 (2006)
  147. Experimental validation of fluorescence intensity ratio/fluorescence lifetime in temperature sensing technique V. K. Rai and S.B. Rai, Sens. Transd. 74, 839 (2006)
  148. Enhancement of luminescence properties in Er3+ doped in TeO2-Na2O-PbX (X-O, F) ternary glass K. Kumar and S. B. Rai, Spectrochim. Acta A 66, 1052 (2007)
  149. Upconversion and optical properties of Er3+ doped in Bi2O-Li2O-PbO glass G. Tripathi, V. K. Rai and S. B. Rai, Spectrochim. Acta. A 66, 1307 (2007)
  150. Upconversion and concentration quenching in Er3+ doped TeO2 -Na2O binary glasses K. Kumar, S. B. Rai and D. K. Rai, J. Noncryst. Sol. 353, 1383 (2007)
  151. Efficient blue upconversion emission in Tm3+ via energy transfer from Yb3+ doped in lithium modified tellurite glass N. K. Giri, A. K. Singh and S. B. Rai, J. Appl. Phys. 101, 33102 (2007)
  152. Upconversion and optical thermometry in Ho3+ doped tellurite glass: effect of addition of PbO and BaO A. K. Singh and S.B. Rai, Appl. Phys. B (Laser and Optics) 86, 661 (2007).
  153. A comparative study of FIR and FL based temperature sensing scheme: An example of Pr3+ V. K. Rai and S.B. Rai, Appl. Phys. B 87, 323 (2007)
  154. UV/Vis upconversion and energy transfer between Nd3+ and Pr3+ ions in codoped tellurite glass K. Kumar and S. B. Rai, Sol. Stat. Commun. 142, 58 (2007)
  155. Enhancement of upconverted luminescence in Er3+: TeO2 on increasing the temperature and concentration of Yb3+ beyond critical limit A. K. Singh, G. Tripathi, A. Rai and S. B. Rai, J. Appl. Phys. 101, 103105 (2007).
  156. Upconversion and temperature sensing behaviour of Er3+ doped bismuth, lithium, barium, lead oxide tertiary glass G. Tripathi, V. K. Rai, S.B. Rai, Opt. Mater. 30, 201 (2007)
  157. Judd-Ofelt analysis of Tm and energy transfer studies between Tm and Er codoped in lithium tellurite network N. K. Giri, A. K. Singh and S.B. Rai, Spectrochim. Acta A, 68, 117 (2007)
  158. Study of frequency upconversion in Yb3+ - Eu3+ by cooperative energy transfer in oxyfluoroborate glass matrix and effect of temperature Y. Dwivedi, S. N. Thakur and S. B. Rai, Appl. Phys. B: Lasers and Optics, 89, 45 (2007)
  159. Temperature sensing behavior of Stark Sub levels V. K. Rai and S. B. Rai, Spectrochim Acta A, 68, 1406 (2007)
  160. Frequency upconversion in Pr3+-Li2O-TeO2 binary glass by decay curve analysis; V. K. Rai and S. B. Rai, Spectrochim. Acta A, 68, 406 (2007)
  161. Uv/Vis emission from Tb3+ - Yb3+ doped tellurite glass on 980 nm excitation N. K. Giri, D. K. Rai and S. B. Rai, Appl. Phys. B: Lasers and Optics 89, 345 (2007)
  162. Optical Properties of Rh6G dye in liquid and Solid Polymer Y. Dwivedi, S. N. Thakur and S. B. Rai, Spectrochim Acta A 69, 789 (2008)
  163. Energy transfer between Er3+ - Sm3+ codoped TeO2-i2O glass G. Tripathi, V. K. Rai, A. Rai and S. B. Rai, Spectrochim Acta A 71, 486 (2008)
  164. Observation of ESA, ET and Thermally enhanced frequency upconversion in Nd:LiTeO2 glass K. Kumar, D. K. Rai and S. B. Rai, Eur. Phys. J. A. 41, 143 (2008)
  165. Strong blue emission from Pr3+ ions through energy transfer process from Nd3+-Pr3+ via Yb3+ doped tellurite glass K. Kumar, A. Rai and S. B. Rai, Spectrochim Acta A 71, 508 (2008)
  166. Optical properties of Eu3+ in oxyfluoroborate glass and its nano-crystalline glass; Y. Dwivedi and S. B. Rai, Opt. Mater. 31, 87 (2008)
  167. Role of Yb3+ and Tm3+ ions in upconversion emission of Tb3+ under 790 and 980 nm laser excitations in Tb3+-Tm3+-Yb3+ doped tellurite glass N. K. Giri, A. K. Singh and S. B. Rai, Opt Commun. 281, 3547 (2008)
  168. Multicolor upconversion from Tm3+ + Ho3+ + Yb3+ codoped tellurite glass on NIR excitation. N. K. Giri, D. K. Rai and S. B. Rai, Appl. Phys. B: Lasers and Optics 91, 437 (2008).
  169. White light upconversion emissions from Tm3++Ho3++Yb3+ codoped tellurite and germanate glasses on excitation with 798 nm radiation N. K. Giri, D. K. Rai and S. B. Rai, J. Appl. Phys. 104, 113107 (2008)
  170. Spectroscopic study of overtone and combination bands in aliphatic aldehydes. Y. Dwivedi, and S. B. Rai, Vib. Spectros. 49 278 (2008)
  171. An intense white emission from Pr3+ - Er3+ - Yb3+ doped tellurite glass. Y. Dwivedi, A. Rai and S. B. Rai, J. Appl. Phys. 104, 043509 (2008)
  172. Multifunctional Er3+, Yb3+ codoped Gd2O3 nano-crystalline phosphor synthesized through optimized combustion route S. K. Singh, K. Kumar and S. B. Rai, Appl. Phys. B: Laser and Optics 94, 165 (2009).
  173. Optical properties and switching behavior in Gd2O3: Er3+ nano-phosphor S. K. Singh, K. Kumar and S. B. Rai, J Appl Phys 106, 093520 (2009)
  174. Intense green and red upconversion emissions from Ho3+ in presence of Yb3+ in Li:TeO2 glass N. K. Giri, S. B. Rai and A. Rai, Spectrochim Acta A 74, 1115 (2009)
  175. UV/blue upconversion in Nd3+:TeO2 glass, effect of modifiers and heat treatment on the fluorescence bands
  176. R. K. Verma, K. Kumar and S. B. Rai, Spectrochim Acta A 74, 776 (2009)
  177. Upconversion and anomalous power dependence in Ca12Al14O33:Er3+/Yb3+ single phase nanophosphor C. Joshi, K. Kumar and S. B. Rai, J. Appl. Phys. 105, 123103 (2009)
  178. Preparation and characterization of a mercury based Indian traditional drug: Ras-Sindoor” S. K. Singh, A. Chaudhary, D. K. Rai and S. B. Rai, Indian J. Trad. Knowled. 8, 346 (2009)
  179. Er3+/Yb3+ co-doped Gd2O3 nano-phosphor for optical thermometry S. K. Singh, K. Kumar and S. B. Rai, Sens. Actu. A: Physical 149 16 (2009).
  180. Overtone spectroscopy of chlorine substituted benzene derivatives, Y. Dwivedi, S. N. Thakur, and S. B. Rai; Spectrochimica Acta A 71 1952 (2009).
  181. Energy transfer in Er:Eu:Yb co-doped tellurite glasses: Yb as enhancer and quencher. Y. Dwivedi, A. Rai, S. B. Rai; J. Lumin. 129 629 (2009)
  182. Spectroscopic Study of Dy3+ and Dy3+/Yb3+ ions co-doped in barium fluoroborate glass. Y. Dwivedi, and S. B. Rai; Optical Materials, 31 1472 (2009).
  183. One- and two-photon-pumped luminescence studies on DAST and UDAST organic dye molecules, K. Kumar, R. N. Rai, S. B. Rai, Appl Phys B 96 85 (2009).
  184. Spectroscopic studies of overtone and combination band in aliphatic aldehydes Y. Dwivedi, and S. B. Rai Vibrational Spectroscopy 49, 278 (2009)
  185. Infrared & Raman Spectra of Histidine. A Ab-initio DFT calculations of Histidine molecule and its different protonated form. S Kumar, A K Rai, S. B. Rai and D. K. Rai, Ind. J. Phys. 84, 107 (2010)
  186. Efficient UV-Visible upconversion emission in Er/Yb codoped La2O3 nano crystalline phosphor S. K. Singh, A. K. Singh, D. Kumar, Om Prakash and S. B. Rai Appl Phys B : Lasers and Optics 98, 173 (2010)
  187. Synthesis and spectroscopy of transparent colloidal solution of Gd2O3 Er/Yb spherical nanoparticles by pulsed laser ablation S. K. Singh, K. Kumar and S. B. Rai Mater. Sci. Eng. B 166, 180 (2010)
  188. SrAl4O7 Tm/Yb nanocrystalline blue phosphor, thermal, structural and optical properties N. K. Giri, S. K. Singh and S. B. Rai Appl Phys B: Lasers and Optics Appl Phys B: Lasers and Optics 99 271 (2010).
  189. Structural and optical properties of Sm (DBM)3 Phen doped in Polymethylmethacrylate (PMMA):An evidences for cascading energy transfer process A. K. Singh, S. K. Singh, R. Prakash and S. B. Rai Chem. Phys. Lett. 485, 09, 2010
  190. Blue and red emission from Eu doped barium tetraborate crystals Y. Dwivedi and S. B. Rai J. Am. Ceram. Soc. 727, 93 (2010)
  191. Quality control of herbal medicine by using spectroscopic techniques and multivariate statistical analysis S. K. Singh, S. K. jha, A K. Chaudhary, RDS Yadava and S. B. Rai, Pharmaceutical Biology 48 134 (2010)
  192. Synthesis, characterization and histopathological study of a lead based Indian traditional drug: Naga bhasma” S K Singh, D N S Gautam, M Kumar, S B Rai, Indian J Phar Sci 72, 24 (2010)
  193. Spectroscopic studies of L-argenine molecule S Kumar, S. B. Rai, IJPAP 48, 251 (2010)
  194. LIBS diagnostics of rare earth doped glasses Y. Dwivedi, S. N. Thakur, and S. B. Rai, Appl. Opt. 49, C-42 (2010)
  195. Eu3+, Yb3+ codoped Gd2O3 single phase nano phosphor: An enhanced monochromatic red emission through cooperative upconversion and downconversion G Kaur, S K Singh, S B Rai, J Appl Phys 107, 073514 (2010)
  196. Up and down conversion fluorescence studies on combustion synthesized Yb3+/Yb2+: MO-Al2O3 (M=Ca, Sr and Ba) phosphors R. K. Verma, Anita Rai, K. Kumar and S. B. Rai, J Lumin 130, 1248 (2010)
  197. Stokes and Antistokes emission from Eu/Yb: BaB4O7 nanocrystals Y. Dwivedi, D. K. Rai and S. B. Rai Opt. Mat 32, 913 (2010)
  198. Magnetic field induced optical bistability in multifunctional Gd2O3: Er3+/Yb3+ upconversion nanophosphor” S K Singh, K Kumar, M K Srivastava, D K Rai, S B Rai, Optics Letters Optics Letters 35, 175 (2010)
  199. Inter-conversion of Tb3+ and Tb4+ states and its fluorescence properties in MOAl2O3: Tb (M = Mg, Ca, Sr, Ba) phosphor materials R. K. Verma, K. Kumar, S. B. Rai, Solid State Sciences (in press)
  200. Intense White Luminescence from Combustion Synthesized Ca12Al14O33: Yb3+/Yb2+ Single Phase Phosphor Chetan Joshi, K. Kumar and S. B. Rai, J Fluores. (in press)
  201. Enhanced Upconversion emission in Er3+ doped tellurite glass containing silver nano-particles. S. K. Singh, N. K. Giri, D. K. Rai, S. B. Rai, Solid State Sciences (accepted)
  202. Study of enhanced red emission from Sm3+ (SAL)3Phen tertiary complexes in Poly vinyl alcohol films G. Kaur, Y. Dwivedi, S. B. Rai, Opt Commun (accepted)
  203. Fluorescence characteristics of Dy3+ doped calcium fluoroborate glass J S Kumar, N. K. Giri, L. Ramamoorthy, S. B. Rai, J Lumin (accepted)
  204. Spectroscopic Studies of Sm, Er doped Fluorotellurite glass A. Bahadur, Y. Dwivedi, S. B. Rai Spectr Chim Acta A (accepted)
Books
Recent Advances in Plasma Science and Technology (1995), Allied Publishers, New Delhi Edited in collaboration with Rampal Singh
Articles in Proceedings
  • Laser double-resonance-spectroscopy of molecular Rydberg states W. Demtroder, D.Eisel, B. Hemmerling and S.B. Rai Laser Spectroscopy VI, 250 (1983) Springer Verlag: Edited by H.P. Weber and P. Luthy
  • Spectroscopy and applications of Combustion synthesized multifunctional nanophosphor
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