Our research activities are conducted mainly around the following five areas:
1. Advanced Device Development
-Ultrafast photoconductors(e.g., ErAs:GaAs, metal-implanted InGaAs, ZnO).
-Room-temp thermal detectors(e.g., single-crystal LiTaO3 pyroelectrics).
-Room-temp ultrafast Schottky rectifiers(e.g., CMOS-compatible Si-silicide diodes).
2. Advanced Component and Circuit Development
-PC switches and impulsive illuminators; ultra-wideband gated receiver.
-THz CW sources based on photo-mixing and novel optoelectronic effects.
-2D THz focal-plane, "staring" arrays.
3. THz System Development
-Active (radar) and passive system architecting: analysis and optimization.
-All-room-temperature THz camera w/readout electronics and human interface.
4. Signal and Image Processing
-THz resonant signature identification (e.g., explosive and biosignatures).
-THz image processing for biomedicine (e.g., skin-burn imaging, corneal imaging).
5. THz Phenomenology
-Scattering of THz radiation from diffuse media.
-Solid-state physics of THz low-lying vibrational resonances.
-THz interation (particularly in reflection) with human skin and tissue.