The major research areas are on the growth of active and nonlinear crystalline fibers, and high brightness laser technologies in order to realize compact and efficient lasers and broadband light sources with excellent mode quality for applications in bio-photonics, optical communications, nano-photonics, and data storages.
The present research directions are listed below:
1.Cr4+ doped crystal fiber light source and optical amplifiers:
The ultra-broadband nature of Cr ion in near infrared wavelength makes it attractive for applications in optical coherence tomography (OCT). A cellular resolution OCT is under development.
2.Nonlinear frequency conversion using periodically poled lithium tantalite (LT) crystal fiber:
Nonlinear crystal fiber enables efficient frequency conversion at CW and low power region because of the confined laser beam in fiber core for long range. We are studying the poling of glass-clad LT for wavelength conversion.
3.Yb doped fiber lasers:
We are developing Yb:fiber based efficient and high power lasers and master oscillator power amplifiers. A 100-W Yb:fiber laser was constructed for high precision machining as well as nonlinear optics applications.
4.High-brightness white light point source:
Using Ce,Sm:YAG double-clad crystal fiber, we have generated white light with a luminance of 4.5109 cd/m2 out of a 10-m-diameter core. Wave propagation characteristics is under investigated for improving the optical efficiency.

Glass-clad crystal fiber growth system, multi-wavelength confocal microscope, polarizing microscope, optical spectrum analyzer, RF spectrum analyzer, oscilloscopes, large-mode- area fiber fusion splicer, mode master, optical low-coherence reflectometer, ion gun, tunable lasers, high power laser diodes, furnace, grinding/polishing machines, cutting machine