- High Energy Materials and their interaction with ultrashort pulses.
- Laser spectroscopy based techniques for detection of explosives (point, standoff, remote).
- Picosecond and Femtosecond ablation for creating Nanoparticles and Nanostructures for Surface enhanced Raman Scattering studies.
- Laser Induced Breakdown Spectroscopy with ns, ps, and fs pulses.
- Materials for terahertz generation, Terahertz time-domain spectroscopy.
- Micro-/Nano-machining of optical components in polymers, crystals, and silicon
- Femtosecond Laser Direct Writing, Two-photon Polymerization, Laser Interference Lithography.
- Micro-/Nano-machining of Waveguides, Y-branches, Bragg gratings, and Filters in polymers, crystals, and silicon using high energy (MeV) proton beam
- Semiconductor Nonlinear Optics: Optical frequency conversion techniques [Second Harmonic Generation, Sum Frequency Generation, Difference Frequency Generation]
- Propagation Loss measurements in waveguides using scattering and cw Fabry-Perot techniques
- Nonlinear Optics: Optical limiting, 3rd order and 2nd order nonlinearities, Degenerate Four Wave Mixing, Z-scan, SHG, and Electric Field Induced SHG
