DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click HERE
to register or log in.
A STUDY ON P-N JUNCTION PHOTODETECTORS UTILIZING INTERNAL PARAMETRIC AMPLIFICATION.
SPERRY RAND RESEARCH CENTER SUDBURY MASS
A new class of microwave photodetector - the edgeilluminated photodiodes - was fabricated and tested. The extension of the spectral response further into the infrared was verified through experimental use. One of these diodes was used for the detection of light 6328 A modulated at frequencies as high as 8 Gc. This type of detector may also provide efficient detection of microwavemodulated, far-ultraviolet radiation. A degenerate photoparametric amplifier intended for signal frequencies of 0.496 and 0.775 Gc was designed, constructed and tested. A power gain of about 25 dB was obtained using an optical signal modulated at 0.496 Gc. The photoparametric diode used was one of our face-illuminated units in a DC-18 coaxial package. A nondegenerate photoparametric amplifier was designed and constructed. This amplifier structure allows the use of either face- or edge-illuminated photoparametric diodes. The epoxy sealing of devices encapsulated in DC-18 package was replaced with a metal-sealing technique to improve long-term device reliability.
Quarterly rept. no. 3, for period ending 31 Dec 64,
N600 19 61770