Computer Science – Performance
Scientific paper
Sep 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995spie.2551..135e&link_type=abstract
Proc. SPIE Vol. 2551, p. 135-144, Photoelectronic Detectors, Cameras, and Systems, C. Bruce Johnson; Ervin J. Fenyves; Eds.
Computer Science
Performance
Scientific paper
We present the development of extended near infrared based image intensifiers with InGaAs semiconductor and multi-alkali based photocathodes having 1.0-1.3 micrometers and 1.0-1.1 micrometers spectral sensitivities, respectively. For the InGaAs based image intensifiers, we study their material characteristics using transmission, photoluminescence, micro-Raman, and scanning Auger spectroscopies. Direct spectral comparison of the InGaAs image intensifiers are made to standard Generation II and III image intensifiers. Then we study the sealed NEA InGaAs image tube performance parameters such as spectral sensitivity, whitelight photoresponse, equivalent background illumination, signal-to-noise, modulation transfer function, and optical system-image intensifier field performance data. For the multi-alkali based image intensifiers, we present a direct spectral comparison of it to our NEA InGaAs and standard super Gen II image tubes. Finally, we examine the advancement of our near infrared devices into the 1.5-2.0 micrometers spectral regime.
Estrera Joseph P.
Passmore Keith T.
Rector M. K.
Sinor Timothy W.
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