Quasi-Optical Broadband Detectors

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Presentation transcript:

Quasi-Optical Broadband Detectors Frequency Range 100- 1000 GHz Performance expected to ~2 THz Responsivity 500 V/W typical NEP ~ 10 pW/rtHz Antenna directivity 25- 35 dB nom. Sub-ns response time See next page for THz measurement… Quasi-Optical Detector Silicon Lens QOD Responsivity Testing Focusing Mirror Detector Use lens to fully couple source power to detector Allows direct measurement of detector responsivity Waveguide coupler used to measure transmitted power Focusing Mirror Source 11/16/2018

600-900 GHz QOD Testing Photo of 600-900 GHz Testing Source Quasi-Optical Detector Removable mounting plate Photo of 600-900 GHz Testing The measured QOD response is comparable or higher than the waveguide ZBD in the 600-900 GHz band ZBD responsivity 500-1500 V/W over WR- 1.2 band QOD and ZBD measured using identical test setup Horn to horn coupling (1” distance) with no lens Provides a relative measurement of two detectors Excellent responsivity to > 1 THz Source 1” b/n Tx & Detector QOD 11/16/2018