... towards excellence in science

An Autonomous Institution, Under the Ministry of Education, Government of India

Kamaraju Natarajan

Associate Professor
Dept: Physical Sciences (DPS)
E-mail: nkamaraju [at]
Personal homepage: Click Here

Research Interest:

We investigate ultrafast dynamics in condensed matter systems using the experimental tools of femtosecond pump-probe spectroscopy and time and frequency resolved terahertz (THz) spectroscopy. The pump and probe pulses range from UV, VIS, IR and THz wavelengths. Nonlinear response of the condensed matter will be investigated using femtosecond pulses in this electromagnetic region. Some examples of excellent candidates to use THz and femtosecond pulses are 2D systems like 2DEG/2DHG, 2D layered materials, topological systems, solar cells, strongly correlated systems and artificially created metamaterials. Another direction of my interest is to study possible damage to biological systems due to intense THz pulses and THz imaging of biological systems and superconductors.

Academic Background:

  1. PhD (Ultrafast Experimental Condensed Matter Physics), Indian Institute of Science, 2010
  2. MSc (Physics), Sri Sathya Sai Institute of Higher Learn (Sri Sathya Sai University (Deemed)), 2000
  3. BSc(Hons.) (Physics), Sri Sathya Sai Institute of Higher Learn (Sri Sathya Sai University (Deemed)), 1998


  1. Associate Professor, IISER Kolkata (current)
  2. Assistant Professor and Department of Physical Sci, IISER Kolkata (2016 - 2021)
  3. Postdoc Research Associate, Los Alamos National Laborotaries (2013 - 2016)
  4. Postdoc Associate, Rensselaer Polytechnic Institute (2012 - 2013)
  5. Visiting Scientist, Fritz Haber Max Planck Gelleshaft (2010 - 2012)

Awards and Honors:

  1. Outstanding Reviewer 2018 from Nature:Light Science Applications (2019)
  2. Fritz Haber Maxplanck Fellowship from Max Planck Gelleshaft Germany (2010)

Selected Publications:

  1. Mukherjee, Soumya; NM, Anjankumar; Mondal, Ayan; Mahalingam, Venkatramanan and Kamaraju, N. 2023."Trapping and exciton-exciton annihilation assisted ultrafast carrier dynamics in nanosheets of 2H-MoSe2 and Cr doped 1T/2H-MoSe2." J. Chem. Phys., 159, 164705
  2. Mukherjee, Soumya; NM, Anjankumar; Ramesh, Saranya; Karthikeyan, B and Kamaraju, N. 2023."Many-body interaction governed ultrafast relaxation dynamics of hot holes in CuS nanoflakes and photocatalytic efficiency enhanced CuS/Ag2S nanocomposites." ACS Appl. Opt. Mater., 1, 1332-1342
  3. Mukherjee, Soumya; NM, Anjankumar; Karthikeyan, B and Kamaraju, N. 2023."Investigation of conductivity and shielding efficiency of the free-standing PVA–GO–Ag composite thin films in terahertz regime using time-domain terahertz spectroscopy." Applied Physics A, 129, 1-13
  4. NM, Anjan; Mukherjee, Soumya; Ramesh, Saranya; Mondal, Ayan; Mahalingam, Venkataramanan and Natarajan, Kamaraju. 2022."Photo Excited Ultrafast Dynamics of Free Carriers and Polarons in V2O5 Micro-Particles through Time-resolved Non-Degenerate Pump Probe Spectroscopy." J. Phys. Chem. C, 126, 20535
  5. NM, Anjankumar; Mukherjee, Soumya; Sunny, Anoop; Karthikeyan, B and Kamaraju, N. 2022."Investigation of self-trapped excitonic dynamics in hematite nanoforms through non-degenerate pump–probe transmission spectroscopy." Applied Physics Letters, 121, 202102

All Publications: Click Here