Primary research interests are optoelectronic devices and materials based on compound semiconductors, e.g., mid- and long-wavelength IR lasers, low noise and high power microwave devices, and optoelectronic integrated circuits. These research projects collaborate extensively with other government and industry laboratories including Naval Research Lab., Sandia national Labs., Jet Propulsion Lab., Lucent Technologies Bell Labs., MIT Lincoln Lab., etc. Recently, the Mid IR Laser Project has set a number of performance records for lasers operating beyond 2.5 micron. It has also been selected to participate in the Mars 3198 Lander Program to provide lasers for monitoring humidity in the Martian atmosphere.