Abstract
We are developing resonator-QWIPs for narrowband and broadband long wavelength infrared detection. Detector pixels with 25μm and 30μm pitches were hybridized to fanout circuits and readout integrated electronics for radiometric measurements. With a low to moderate doping of 0.2–0.5×1018cm−3 and a thin active layer thickness of 0.6–1.3μm, we achieved a quantum efficiency between 25 and 37% and a conversion efficiency between of 15 and 20%. The temperature at which photocurrent equals dark current is about 65K under F/2 optics for a cutoff wavelength up to 11μm. The NEΔT of the FPAs is estimated to be 20mK at 2ms integration time and 60K operating temperature. This good performance confirms the advantages of the resonator-QWIP approach.
Published Version
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