Pushing the limits of current technology and the realization of improved standards of experimentation has been a coherent part of his research narrative.

His approach to Femtosecond pulse shaping has been crucial for applications from the demonstration of control in the gas phase fragmentation reactions [17] to 2D IR spectroscopy [18] and quantum computing.

He went on to use the femtosecond optical tweezers to provide a direct measure and control of 'in situ' temperature and viscosity at micro-scale volumes.

[23] This has in turn been shown to be the key to mitigating the deleterious effect of heat accumulation during sensitive measurements of nonlinear optical properties.

[24] Further, this led to the first demonstration of the hitherto unexplored distinction between molecular structures with femtosecond laser-induced thermal spectroscopy.

In more direct applications of the experimental framework driving his work, he has demonstrated how to distinguish overlapping fluorophores in multi-photon imaging microscopy using near-IR high repetition rate femtosecond lasers by exploiting repeated excitation and de-excitation processes that help to distinguish and eventually eliminate abnormal cells from healthy ones.

[28][29] He returned to India to join the Tata Institute of Fundamental Research as a Fellow-E in 1998 as part of the DNAP (Department of Nuclear and Atomic Physics).