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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 29, Iss. 22 — Aug. 1, 1990
  • pp: 3303–3315

Gated photomultiplier response characterization for DIAL measurements

H. Sang Lee, Geary K. Schwemmer, C. Laurence Korb, Mark Dombrowski, and Coorg Prasad  »View Author Affiliations


Applied Optics, Vol. 29, Issue 22, pp. 3303-3315 (1990)
http://dx.doi.org/10.1364/AO.29.003303


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Abstract

The characteristics of various detector responses are studied to understand the cause of various systematic biases and to minimize these undesirable effects in measurements of transient signals with large dynamic range. We quantitatively evaluated signal induced bias, gain variation, and the linearity of commonly used gated photomultipliers in the current integrating mode. Analysis of the results indicates that impurity ions inside the photomultiplier tube are the source of the signal induced bias and gain variation. Two different photomultiplier tubes used in this study show significant differences in the magnitude and decay behavior of signal induced bias. We found it can be minimized by using an external amplifier to reduce PMT gain, and by applying a low potential between the cathode and first dynode. The linearity of a photomultiplier tube is also studied over a large dynamic range of input intensities employing a new technique which does not require an absolute calibration. The result of this study shows that the photomultiplier response is linear only for a limited input intensity range below a certain anode current.

© 1990 Optical Society of America

History
Original Manuscript: February 3, 1989
Published: August 1, 1990

Citation
H. Sang Lee, Geary K. Schwemmer, C. Laurence Korb, Mark Dombrowski, and Coorg Prasad, "Gated photomultiplier response characterization for DIAL measurements," Appl. Opt. 29, 3303-3315 (1990)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-29-22-3303

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