Light emission from CCDs

Details Light emission from CCDs Light emission from CCDs

Jul 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apopt..19.2276z&link_type=abstract

Applied Optics, vol. 19, July 15, 1980, p. 2276.

Physics

Optics

Charge Coupled Devices, Light Emission, Photocathodes, Photoelectrons, Computer Techniques, Field Effect Transistors, Image Reconstruction, Monitors, Radiation Detectors

Scientific paper

During the evaluation of the single photoelectron characteristics of an intensified CCD it was found that the photocathode dark current at -60 C was excessively high for S-20 photocathodes but became immeasurably small when the video output FET drain voltage was reduced from +30 to +20 V. Since this suggested that the CCD was emitting light, an experiment was conducted, using an ICCD detector system. Examination of TV monitor photograph of the CCD surface image and computer printed intensities on a pixel-by-pixel basis from the ICCD data revealed a light spot about 3 ICCD pixels in diameter or 70 microns on the ICCD's photocathode, which corresponds to a diameter of 0.25 mm for the light emitting spot on the CCD.

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