A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
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Bipul Pal

PhD:
Physics (TIFR, Mumbai, 2004)
Area of Interest:
Ultrafast Optical Spectroscopy and Semiconductor Nanostructure
Email ID:
bipul
Research Interest:

To study the carrier and spin dynamics in semiconductor nanostructures using time-resolved, spectrally-resolved, and polarization-resolved laser spectroscopy. Currently we are working on (i) exciton dynamics and nonlinear optical properties in thiophene-based organic semiconductors and (ii) correlation of magnetic and optical properties in transition-metal-doped Zinc Oxide nanoparticles and thinfilms. We would like to explore other diluted magnetic semiconductors (DMS); especially GaN-based DMS. We are interested to explore optically controlled switching application based on photochromatic materials.


Academic Qualification:
  • Ph.D. (Physics), Tata Institute of Fundamental Research, Mumbai, 2004
  • M.Sc. (Physics), University of Kalyani, 1998
  • B.Sc. (Physics Honours), University of Kalyani, 1996
  • Positions:
  • Postdoctoral Research Fellow, University of Tsukuba, Japan (2004 - 2007).
  • Assistant Professor, Indian Institute of Science Education and Research-Kolkata, India (2007 - ).
  • Awards and Honors:
  • Associate of the Indian Academy of Sciences in 2008 for the period 2008-2011
  • INSA medal for Young Scientists from Indian National Science Academy, (2008)
  • JSPS fellowship for postdoctoral research in Japan from Japan Society for the Promotion of Science, (2005-07)
  • INOUE fellowship for postdoctoral research in Japan from INOUE Foundation for Science, (2004-05)
  • TAA-Geeta Udgaonkar award for the best thesis of the year, Tata Institute of Fundamental Research, (2004-05)
  • Siddhartha Sengupta memorial award for obtaining 1st rank in 1st class in M. Sc. (Physics) from University of Kalyani, (1998)
  • University merit scholarship for obtaining 1st rank in 1st class in B. Sc. (Physics Honors) from University of Kalyani, (1996)
  • List of Publications:
  • B. Pal, K. Goto, M. Ikezawa, Y. Masumoto, P. Mohan, J. Motohisa, and T. Fukui, “Spectral diffusion of type-II excitons in wurtzite InP/InAs/InP core-multishell nanowires”, J. Lumin. 129, 1941 (2009).

  • K. Goto, S. Tomimoto, B. Pal, Y. Masumoto, P. Mohan, J. Motohisa, and T. Fukui, “Transient band-bending in InP/InAs/InP core-multishell nanowires”, Phys. Status Solidi C 6, 205 (2009).

  • K. Goto, M. Ikezawa, S. Tomimoto, B. Pal, Y. Masumoto, P. Mohan, J. Motohisa, and T. Fukui, “One- and Two-Dimensional Spectral Diffusions in InP/InAs/InP Core–Multishell Nanowires”, Jpn. J. Appl. Phys. 48, 04C203 (2009).

  • B. Pal and Y. Masumoto, “Spin relaxation in charge-tunable InP quantum dots”, Phys. Rev. B 80, 125334 (2009).

  • B. Pal, K. Goto, M. Ikezawa, Y. Masumoto, P. Mohan, J. Motohisa, and T. Fukui, “Type-II behavior in wurtzite InP/InAs/InP core-multishell nanowires”, Appl. Phys. Lett. 93, 073105 (2008).

  • B. Pal, S. Yu. Verbin, M. Ikezawa, I. V. Ignatiev, and Y. Masumoto, “Nuclear-spin effects in singly negatively charged InP quantum dots”, Phys. Rev. B 75, 125322 (2007).

  • Y. Masumoto, S. Oguchi, B. Pal, and M. Ikezawa, “Spin dephasing of doped electrons in charge-tunable InP quantum dots: Hanle-effect measurements”, Phys. Rev. B 74, 205332 (2006).

  • B. Pal, M. Ikezawa, Y. Masumoto, and I. V. Ignatiev, “Millisecond-range electron spin memory in singly charged InP quantum dots”, J. Phys. Soc. Jpn. 75, 054702 (2006).

  • V. K. Kalevich, E. L. Ivchenko, M. M. Afanasiev, A. Yu. Egorov, A. Yu. Shiryaev, V. M. Ustinov, B. Pal, and Y. Masumoto, “Spin-dependent recombination in GaAsN alloys”, JETP Lett. 82, 455 (2005).

  • M. Ikezawa, B. Pal, Y. Masumoto, I. V. Ignatiev, S. Yu. Verbin, and I. Ya. Gerlovin, “Sub-millisecond electron spin relaxation in InP quantum dots”, Phys. Rev. B 72, 153302 (2005).

  • B. Pal and A. S. Vengurlekar, “On the origin of time resolved pump-probe differential signal from excitons in quantum wells”, Physica E 22, 838 (2003).

  • B. Pal, A. S. Vengurlekar, A. V. Gopal and S. S. Prabhu, “Propagation effects in transient four wave mixing measurements on excitons in GaAs multiple quantum wells”, Physica E 21, 77 (2003).

  • B. Pal and A. S. Vengurlekar, “Time resolved excitonic coherent polarization dynamics in GaAs multiple quantum wells”, Phys. Rev. B 68, 205331 (2003).

  • B. Pal and A. S. Vengurlekar, “Coherent effects in spectrally resolved pump-probe differential reflectivity measurements at exciton resonance in GaAs quantum wells”, Phys. Rev. B  68, 125308 (2003).

  • B. Pal and A. S. Vengurlekar, “Excitonic polarization dephasing under strong resonant pulsed excitation in GaAs quantum wells”, Phys. Rev. B 66, 155337 (2002).

  • B. Pal, A. V. Gopal, S. S. Prabhu and A. S. Vengurlekar, “Intensity correlated nonlinear       photoluminescence spectra in undoped and p-doped GaAs and GaAs quantum wells”, Phys. Rev. B 65, 045312 (2002)

  • B. Pal and A. S. Vengurlekar, “Time constant for relaxation of n = 2 excitons into n = 1 continuum states in GaAs quantum wells”, Appl. Phys. Lett. 79, 72 (2001).

  • B. Pal, A. V. Gopal, and A. S. Vengurlekar, “Unequal dependence of the dephasing rates for inhomogeneously broadened excitons on the intensities of the exciting beams in four-wave-mixing measurements”, Phys. Rev. B 63, 033301 (2001).