SEDL / STP / STP1038-EB / STP24411S

Developments in Beam Profiling with a CCD Area Array Detector

O'Connell, RM
University of Missouri, Columbia, Columbia, Missouri

Ferreira, RJ
University of Missouri, Columbia, Columbia, Missouri

Stewart, AF
University of Missouri, Columbia, Columbia, Missouri

Pages: 9    Published: Jan 1988

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Abstract

Measurements and calculations of the performance of a frame-transfer CCD area array sensor in a beam profiling system are presented. The measured dark current and photosensitivity pattern noise of the sensor are shown to be better than those of previously studied self-scanned imaging devices. Calculated modulation transfer functions agree with previous measurements, verifying that the CCD sensor should be able to adequately resolve spatial frequencies up to 50 mm^-1. A logarithmic video amplifier was successfully interfaced with the CCD camera and an 8-bit image processor for the acquisition of laser beam images with improved contrast.