High-speed MSM photodetectors for millimeter waves

Kerry I. Litvin; Jinwook Burm; David W. Woodard; Pierre Mandeville; William J. Schaff; Mark M. Gitin; Lester Fuess Eastman

doi:10.1117/12.138399

2 December 1992 High-speed MSM photodetectors for millimeter waves

Kerry I. Litvin, Jinwook Burm, David W. Woodard, Pierre Mandeville, William J. Schaff, Mark M. Gitin, Lester Fuess Eastman

Author Affiliations +

Proceedings Volume 1703, Optical Technology for Microwave Applications VI and Optoelectronic Signal Processing for Phased-Array Antennas III; (1992) https://doi.org/10.1117/12.138399
Event: Aerospace Sensing, 1992, Orlando, FL, United States

Abstract

This presentation deals with MSM photodetectors and post-detection amplifiers capable of responding at millimeter-wave frequencies. Monolithic integration, incorporating pseudomorphic MODFETs (SMODFETs) as the amplifiers, is used with coplanar waveguide resonant impedance transformers. Interdigitated Schottky barrier metal fingers, with submicron spacing and unique Bragg reflector layers to maximize light absorption, are used for the photodetector. For a 0.5-micron gap detector, a measurement shows a flat frequency response at least up to 40 GHz. Quantum efficiency is expected to be more than 60 percent for a 0.75 micron gap and 0.25 micron finger detector with 0.375 micron absorption layer.

Citation Download Citation

Kerry I. Litvin, Jinwook Burm, David W. Woodard, Pierre Mandeville, William J. Schaff, Mark M. Gitin, and Lester Fuess Eastman "High-speed MSM photodetectors for millimeter waves", Proc. SPIE 1703, Optical Technology for Microwave Applications VI and Optoelectronic Signal Processing for Phased-Array Antennas III, (2 December 1992); https://doi.org/10.1117/12.138399

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