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4627 Engineering hall
1415 Engineering Drive
Madison, WI 53706

Ph: (608) 213-5483
Fax: (608) 262-1267

Primary Affiliation:
Electrical and Computer Engineering

Additional Affiliations:
Materials Science and Engineering,

Profile Summary

My research interests lie in three areas of semiconductor-laser physics: high-power, coherent edge-emitting lasers; high-power, coherent grating-coupled surface-emitting lasers; and quantum cascade lasers. The first two are based on one- and two-dimensional, high-index-contrast Photonic-Crystal (PC) structures, respectively, for insuring both long-range spatial coherence and stable operation under continuous-wave (CW) driving conditions. The third involves electron transitions between the subbands of multi-quantum-well structures and is focused on achieving high-efficiency CW operation in the mid-infrared (IR) wavelength range: 3-10 microns, via multidimensional conduction-band engineering.

CW-operating quantum cascade lasers emitting in the mid-IR have a wide range of applications from high-sensitivity spectroscopy for non-invasive medical diagnostics and/or chemical-agent detection to free-space communications and infrared countermeasures. High-power coherent diode lasers have many applications such as as sources for high-speed, high-resolution laser printing; generators of blue light via harmonic conversion; and intersatellite optical communications.

For my profesional record, please see at Links the Google Scholar citations profile and the list of publications, patents and invited presentations.



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