Research on Highly Sensitive Infrared Detectors for Improved Reconnaissance.
Final technical rept. 1 Jul 64-30 Jun 72,
AEROSPACE RESEARCH LABS WRIGHT-PATTERSON AFB OHIO
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This report presents some of the research efforts which lead to new concepts for opto-electronic imaging arrangements. This endeavor was ultimately concerned with the detection of dynamic events where the images are formed by radiation with a quantum energy insufficient for the external photoeffect. A vacuum image converter tube for the latter was conceived and built which by means of a semiconductive coating on a mesh screen and by appropriate electron flooding of this mesh in several steps, produces a simultaneous visible image on a phosphor screen. Controllable contrast enhancement is also possible by proper selection of the electrode voltages. The above endeavors were preceeded by theoretical investigations concerned with the threshold limit in photodetection by considering the quantum nature of light and consequently the statistical behaviour of the conversion of radiant energy into electrical carriers, etc. Other problems related to photodetection and visual perception were investigated.
- Electrooptical and Optoelectronic Devices
- Infrared Detection and Detectors