Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1994-01-05
1995-09-19
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
257457, 257459, H01J 4014
Patent
active
054517699
ABSTRACT:
A high speed, metal-semiconductor-metal photodetector includes a pair of generally circular, electrically conductive electrodes formed on an optically active semiconductor layer. Various embodiments of the invention include a spiral, intercoiled electrode geometry and an electrode geometry having substantially circular, concentric electrodes which are interposed. These electrode geometries result in photodetectors with lower capacitances, dark currents and lower inductance which reduces the ringing seen in the optical pulse response.
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Bishop William L.
McAdoo James A.
Towe Elias
Wang Liang-Guo
Blackburn Linda B. B.
Helfrich George F.
Nelms David C.
Nichols Steven L.
The United States of America as represented by the Administrator
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