Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1993-09-23
1995-03-28
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
330 45, 372 4, 2502141, H01J 4014
Patent
active
054019532
ABSTRACT:
A submillimeter wave-generating integrated circuit includes an array of N photoconductive switches biased across a common voltage source and an optical path difference from a common optical pulse of repetition rate f.sub.0 providing a different optical delay to each of the switches. In one embodiment, each incoming pulse is applied to successive ones of the N switches with successive delays. The N switches are spaced apart with a suitable switch-to-switch spacing so as to generate at the output load or antenna radiation of a submillimeter wave frequency f on the order of Nf.sub.0. Preferably, the optical pulse has a repetition rate of at least 10 GHz and N is of the order of 100, so that the circuit generates radiation of frequency of the order of or greater than 1 Terahertz.
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Maserjian Joseph
Spencer Michael G.
Jones Thomas H.
Kusmiss John H.
Le Que T.
Miller Guy M.
Nelms David C.
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