He has worked in the areas of Ion Implantation of Silicon, Laser Processing of Silicon and Laser Raman Spectroscopy of High Tc superconductors and thin films of hydrogenated amorphous silicon. He has done the deposition of superlattice of layered semiconductors by MBE during his post doctoral fellowship at University P&M Curie, Paris (France). His group has been working on the Laser Applications in the Nanoscience / Nanotechnology. Synthesis of semiconductor nanoparticles ( silicon, germanium and GaAs etc.) has been done by ion implantation, laser annealing, laser ablation and laser induced etching processes. He has performed light scattering experiment, photoluminescence and non-linear optical fringe formation in various materials such as semiconductors. Many phases of silicon have been seen during amorphous-to-crystalline phase transition. Recently, he has been working on “Optical properties of carbon nanotubes, graphene and nanoparticles. A large number of projects have been completed by him in the last several years. A large number of publications have resulted in the international journals.