We emphasize on ‘hands on’ training on time-domain photophysics, nonlinear optics & fluorescence microscopy. The entire focus is on imparting the experimental skills to the students that generally go parallel to the black-box, push-button technology. Along with the ‘fabrication-development’ activity, the students are motivated to take up the numerical modelling of the phenomena under studies on contemporary-interdisciplinary topics. The relaxation of the entity known as the excited state†achieved via photoexcitation - is the single point agenda. The phenomena under investigation are “ultrafast relaxation processes with laser-induced transient grating, Z-scan and phase conjugation techniques†and properties of “whispering gallery modes†of symmetric structures embedded with fluorescent materials. The resonance excitation-energy transfer and electron transfer processes are often encountered in the systems while interacting with the non-fluorescent or, low-dimensional materials.
Students
Current PhD Students
✔ PH18D010 TULIKA AGRAWAL
✔ PH20D038 SUGANDH SIROHI
✔ PH21D014 DEBOJYOTI RAY CHAWDHURY
✔ Evolution of stellated gold nanoparticles: new conceptual insights into controlling the surface processes. Gurvinder Singh, Hesamodin Jami, Pooria Lesani, Shubhayan Bhattacharya, Yogambha Ramaswamy, Prem B Bisht, Hala Zreiqat. Nano Research (2021). 2021.
✔ Radiative rate inhibition in fluorescent nanodiamonds-microcavity system. Tulika Agrawal, Shubhayan Bhattacharya, Vijay Kumar Sagar and Prem B. Bisht. J. Luminescence. 234 . 117963-71. 2021.
✔ Optical properties of different crystal structures under evaporative crystallization,. Shubhayan Bhattacharya, Tulika Agrawal, Aneesh V. Veluthandath, Prem B Bisht. Optical Materials. 114 . 110895-901. 2021.
✔ Study of a dark core beam generated by nonlinear thermo-optical effect,. Soumyodeep Dey, Sailaja Rallabandi, Surendra Singh, Prem Bisht. Optics and Laser Tech. 134 . 106652-60. 2021.
✔ Investigation of thermal non-linearity due to nJ high repetition rate fs pulses on wrinkled graphene. Soumyodeep Dey, Sudhakara Reddy Bongu, Vijay Kumar Sagar and Prem B. Bisht. J. Opt. Soc. Am. B. 38 . 2019-2026. 2021.
✔ Effect of coating few-layer WS2 on the Raman spectra and whispering gallery modes of a microbottle resonator. Shubhayan Bhattacharya, Aneesh V. Veluthandath, C. C. Huang, Ganapathy S. Murugan, Prem B. Bisht,. J. Optics . 22 . 105003-12. 2020.
✔ Optical characterization of graphene-f-o-phenylenediamine and charge transfer interaction with organic dye. Vijay Kumar Sagar, Shubhayan Bhattacharya, Soumyodeep Dey, Prem B. Bisht. Carbon . 166 . 15-25. 2020.
✔ Photoluminescence enhancement of organic dye by graphene quantum dots. Vijay Kumar Sagar, Aneesh V. Veluthandath, Prem B. Bisht. J. Photochem. Photobiol. A: Chemistry . 400 . 112614-112620.. 2020.
✔ Temperature dependence of whispering gallery modes of quantum dot-doped microbottle resonators. Shubhayan Bhattacharya, Aneesh V. Veluthandath, Ganapathy Senthil Murugan, Prem B. Bisht. J. Luminescence. 221 . 117050. 2020.
✔ Fano resonances and photoluminescence in self-assembled high Q microbottle resonators. Aneesh V. Veluthandath, Shubhayan Bhattacharya, Ganapathy Senthil Murugan , Prem B. Bisht. IEEE Photonics Technology Letters. 31. 226-229. 2019.
✔ Identification of Whispering Gallery Mode (WGM) coupled photo-luminescence and Raman modes in complex spectra of MoS2 in Polymethyl methacrylate (PMMA) microspheres. Aneesh V. Veluthandath, Prem B. Bisht. Journal of Luminescence. 187 . 255-259. 2017.
✔ Broad band nonlinear optical parameter measurements using a single white light Z-scan,. Soumyodeeep Dey , Sudhakara Reddy Bongu , Prem B. Bisht. Journal of Applied Physics. 121 . 113107. 2017.
✔ Control over the charge transfer in dye-nanoparticle decorated graphene. Sudhakara Reddy Bongu, Aneesh V. Veluthandath, B. R. K. Nanda, Sundara Ramaprabhu, and Prem B. Bisht. Chem. Phys. Letters . 644 . 176-182. 2016.
✔ Effect of complex formation on nonlinear optical parameters of dye-graphene system. Sudhakara Reddy Bongu, Prem B. Bisht,Basanth S. Kalanoor, Raman C.K. Namboodri,Pranati Nayak, Sundara Ramaprabhu. Journal of Photochem Photobiol A: Chemistry. 299 . 54-61. 2015.
✔ Femtosecond Pulses in 375 nm - 405 nm Region by Chirped Sum Frequency. P.B. Bisht, A.S. Ali. Ultrafast Phenomena XIX, Springer Proceedings in Physics,. 126 . 753-756.. 2015.
✔ Radiative rate modification in CdSe quantum dot-coated microcavity. Aneesh V. Veluthandath, Prem B. Bisht. Journal of Applied Physics. 118 . 233102. 2015.
✔ Influence of localized surface plasmons on Pauli blocking and optical limiting in graphene under femtosecond pumping. Sudhakara Reddy Bongu, Prem B. Bisht*, Raman C. K. Namboodiri, Pranati Nayak, Sundara Ramaprabhu,Thomas J. Kelly, Colm Fallon, and John T. Costello. J. Appl. Physics. 116 . 073101. 2014.
✔ Tunable femtosecond pulses in 375–405 nm region with Ti: sapphire oscillator by chirped sum frequency,. S. Akbar Ali & Prem B. Bisht* & Basanth S. Kalanoor. J.Opt (Springer). 43 . 269–273. 2014.
✔ Enhanced SWIR third order nonlinearity of gold nanoparticle embedded ZnO thin films,. S. Akbar Ali, P. B. Bisht*, B. S. Kalanoor, A. Patra, S. Kasiviswanathan;. J. Opt. Soc. Am. B. 30 . 2226-2232.. 2014.
✔ Solvatochromism, multiphoton fluorescence, and resonance energy transfer in a new octupolar dye-pair. C. K. R. Namboodiri , P. B. Bisht, Ramesh Mukkamala, B. Chandra , I. S. Aidhen. Chemical Physics . 415 . 190-195. 2013.
✔ Mixed β-Pyrrole Substituted meso-Tetraphenylporphyrins and Their Metal Complexes: Optical Nonlinearity using DFWM Technique. Basanth Kalanoor, Prem B. Bisht*, Kailash C. Jena,Velkannan Veerapadian, P. Bhyrappa. J. Phys. Chem. :A . 117 . 8216-8221. 2013.
✔ Optical nonlinearity of silver decorated graphene. B. S. Kalanoor , S. A. Ali, P. B. Bisht*, T. T. Baby, S. Ramaprabhu. J. Opt. Soc. Am. B. 29 . 669 - 675. 2012.
✔ Restricting charge transfer in dye-graphene system,. V. R. Dantham, P. B. Bisht*, B. S. Kalanoor, T. T. Baby, S. Ramaprabhu. Chem. Phys. Letters . 521 . 130-133. 2012.
✔ Influence of whispering gallery modes (WGMs) on energy transfer,. V. R. Dantham and P. B. Bisht. Chem. Phys . 388 . 38-42. 2011.
✔ Enhancement of Raman scattering by two orders of magnitude using photonic nanojet of a microsphere. V. R. Dantham, P. B. Bisht and C. K. R. Namboodiri. J. Appl. Physics. 109. 103. 2011.
✔ Effect of nonlinear absorption in estimation of order of nonlinear optical process by fluorescence intensity. K.S. Bindra, C.P.Singh, S.M.Oak, R.Sailaja, P. B. Bisht,. J. Optics & Laser Tech. 43 . 1486-1490. 2011.
✔ Whispering gallery modes and effect of coating on Raman spectra of single microspheres. V. R. Dantham, P. B. Bisht, P. S. Dobal. J. Raman Spectroscopy. 42 . 1373-1378. 2011.
✔ A new fluorescent probe with stimulated emission and multiphoton absorption properties. S. Akbar Ali, P. B. Bisht, A. Senthilmurugan , I. S. Aidhen. Chem. Phys. 382 . 68-73. 2011.
✔ Parametric and nonparametric processes in ultrafast optics. Prem B Bisht,. KIRAN- Bulletin of Indian Laser Association, Dec. 2010.. 2010.
✔ Conical emission in β-barium borate under femtosecond pumping with phase matching angles away from second harmonic generation,. S. Akbar Ali, P. B. Bisht, A. Nautiyal, V. Shukla, K. S. Bindra , S. M. Oak,. J. Opt. Soc. Am. B. 27. 1751-1755. 2010.
✔ Steady state and time-resolved studies of pyrene in solution and in single microcrystals,. Ambika Nautiyal, Prem B. Bisht. Journal of Luminescence. 130 . 1829-1833.. 2010.
✔ High-Q whispering gallery modes of doped and coated single microspheres and their effect on radiative rate. D. Venkata Ramanaiah , P. B. Bisht. J. Opt. Soc. A m. B. 26 . 290. 2009.
✔ Effects of thickness of -barium borate and angle of non-collinearity on the fs pulse generation by optical parametric amplification. Ambika Nautiyal, P. B. Bisht, , K. S. Bindra , S. M. Oak. Optics & Laser Technology. 41 . 539-541. 2009.
✔ Broadly tunable parametric line emission from - barium borate on pumping with picosecond pulses. Ambika Nautiyal, Prem B. Bisht. Optics Communications. 281 . 3351- 3355. 2008.
✔ Sum and difference frequency generation of white light continuum with the ps pulses of Nd+3:YAG laser in a thick BBO crystal. A. Nautiyal, Prem B. Bisht. Optics Communications. 278 . 175-179 . 2007.
✔ Influence of multiphoton events in measurement of two-photon absorption cross-sections and optical nonlinear parameters under femtosecond pumping. R. Sailaja, Prem B. Bisht, C. P. Singh, K. S. Bindra , S. M. Oak. Optics Communications. 277 . 433-439. 2007.
✔ Study of optical nonlinearity of functionalised multi-wall carbon nanotubes by using degenerate four wave mixing and Z-scan techniques. K. C. Jena, Prem B. Bisht, M. M. Shaijumon , S. Ramaprabhu. Optics Communicatios. 273 . 153-158. 2007.
✔ Tunable multiline distributed feedback dye laser based on the phenomenon of excitation energy transfer. R. Sailaja , Prem B. Bisht. Organic Electronics. 8 . 75-183 . 2007.
✔ Influence of pulsed and cw pumping on optical nonlinear parameters of laser dyes probed by closed-aperture Z-scan technique. U. Tripathy , Prem B. Bisht. J. Opt. Soc. Am.: B. 24 . 2147-2156. 2007.
✔ Effect of donor-acceptor interaction strength on excitation energy migration and diffusion at high donor concentrations. U. Tripathy , P. B. Bisht. Journal of Chemical Physics. 125. 144502 -144509. 2006.
✔ Simultaneous estimation of optical nonlinear refractive and absorptive parameters by solvent induced changes in optical density. Umakanta Tripathy , Prem B. Bisht. Optics Communications . 261. 353-358. 2006.
✔ Concentration sensing based on radiative rate enhancement from a single microcavity. P. Sandeep , Prem B. Bisht. Chemical Physics Letters . 415 . 15-19 . 2005.
✔ Effect of adsorbed concentration on the radiative rate enhancement of photo-excited molecules embedded in single microspheres. P. Sandeep , Prem B. Bisht. J. Chem. Phys. 123. 204713-204720. 2005.
✔ Excitation energy transfer in a weekly coupled system: System with time-resolved fluorescence microscopy and laser induced transient grating techniques. Kailash Chandra Jena , Prem B Bisht. Chemical Physics. 314 . 179-188 . 2005.
✔ Cavity quantum electrodynamic effects and control of radiative rate of 9-amino acridine hydrochloride hydrate. P. Sandeep , Prem B. Bisht. Chem. Phys. Letters . 371. 327-332. 2003.
✔ Theoretical and experimental studies on photophysical parameters of DBPI by using transient grating technique. R. J. Rajesh , P. B. Bisht. Chem. Phys. Letters. 357. 420-425. 2002.
