Abstract
Several self-scanning photodiode arrays (IPDA) used for CARS spectroscopy are shown to exhibit a greater image persistence than has generally been realized, and to exhibit a falloff in sensitivity that is logarithmic with decreasing output signal. These effects are attributed to the P-20 phosphor based intensifiers used in the IPDAs and are probably generic to all such detectors. A strategy for minimizing the image persistence in CARS spectroscopy is presented. A prototype detector incorporating a much faster rare earth phosphor is evaluated and shown to be more suited to single pulse CARS measurements in turbulent combustion than the IPDAs incorporating P-20 phosphors.
© 1989 Optical Society of America
Full Article | PDF ArticleMore Like This
D. R. Snelling, G. J. Smallwood, and T. Parameswaran
Appl. Opt. 28(15) 3233-3241 (1989)
Michael Bristow and Rainer Zimmermann
Appl. Opt. 32(7) 1065-1077 (1993)
B. R. Sandel, D. F. Collins, and A. Lyle Broadfoot
Appl. Opt. 25(20) 3697-3704 (1986)