Novel Self-Scanned Photodiode Array Spectrophotometer

Bradley c. Wood

doi:10.1117/12.957068

3 May 1979 Novel Self-Scanned Photodiode Array Spectrophotometer

Bradley c. Wood

Proceedings Volume 0172, Instrumentation in Astronomy III; (1979) https://doi.org/10.1117/12.957068
Event: Instrumentation in Astronomy, 1979, Tucson, United States

Abstract

A self-scanned diode array spectrophotometer, designed and constructed at the University of California, Los Angeles, Department of Astronomy, is described. Careful attention to physical properties of the detector and system noise and stability requirements has resulted in an instrument with performance closely approaching theory. In particular, system noise performance is limited by thermal and interface state noise in the detector (a Reticon Corp. RL-256A-17) rather than preamplifier noise. Advantage is taken of the dependence of dark current on diode bias voltage, as well as temperature, such that a tradeoff between leakage rate and dynamic range can be selected. This feature also allows operation of the array at higher temperatures, enhancing sensitivity in the near infrared.

Citation Download Citation

Bradley c. Wood "Novel Self-Scanned Photodiode Array Spectrophotometer", Proc. SPIE 0172, Instrumentation in Astronomy III, (3 May 1979); https://doi.org/10.1117/12.957068

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