I am involved both in instrumentation and pure research projects, with a significant overlap between the two.

Together with my colleague Don Hall, I have developed the HAWAII series of infrared detector arrays, with our industrial partner Teledyne (formerly Rockwell). These detectors were instrumental in bringing infrared astronomy to a level of maturity similar to optical astronomy. We are currently concluding the NSF-funded development of the HAWAII-4RG-15 detector arrays, and are now concentrating on avalanche photodiode devices.

I have built several major instruments:
QUIRC – the largest IR camera in the world, back in 1994.
NIRI – the Gemini Near-Infrared Imager
HiCIAO – the Subaru Hi-contrast Coronographic Imager for Adaptive Optics

I am a co-investigator on the JWST NIRCam science team, and responsible for the GTO projects on exoplanet spectroscopy and interstellar ices.