Abstract

The use of intensified linear photodiode arrays as spectrograph detectors can, in certain applications, be subject to interference by several side effects. The widely used P-20 phosphor of the image intensifier exhibits both phosphorescence decay (persistence) and thermoluminescence memory effects together with an inherent nonlinear response to incident light, whereas the photodiode array exhibits a readout-lag memory effect. During characterization of any one of these effects, it was important to ensure that the measurements were not influenced by the other side effects. This was particularly true for the phosphorescence and readout-lag effects, and for the thermoluminescence and inherent phosphor nonlinearity effects. These side effects become significant in applications where spectra that exhibit large changes in shape and intensity on a pulse-by-pulse basis are being recorded individually at rates > 0.1 Hz. A determination should then be made to either correct, circumvent, or ignore these potential sources of error.

© 1993 Optical Society of America

Short- and long-term memory effects in intensified array detectors: influence on airborne laser fluorosensor measurements

Michael P. Bristow, Rudolpha M. Turner, Curtis M. Edmonds, and Donald H. Bundy
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Nonlinearity and image persistence of P-20 phosphor-based intensified photodiode array detectors used in CARS spectroscopy

D. R. Snelling, G. J. Smallwood, and R. A. Sawchuk
Appl. Opt. 28(15) 3226-3232 (1989)

Effect of phosphor persistence on photometry with image intensifiers and integrating readout devices

B. R. Sandel, D. F. Collins, and A. Lyle Broadfoot
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Photoelectron counting with an image intensifier tube and a self-scanned photodiode array

Bill R. Sandel and A. Lyle Broadfoot
Appl. Opt. 15(12) 3111-3114 (1976)

Persistence of phosphor glow in microchannel plate image intensifiers

Marsha R. Torr
Appl. Opt. 24(6) 793-795 (1985)