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Proceedings Paper

Development of a 1- to 1.7-um image intensifier tube using a Generation III configuration
Author(s): Joseph P. Estrera; Steve Lambert; Keith T. Passmore; David L. Phillips; Stan M. Vernon; Robert Glosser; William E. Flynt; M. A. Rector
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Paper Abstract

We present the development of a near infrared image intensifier tube based on a Generation III configuration. The photocathode driving this tube is based on a negative-electron-affinity (NEA) InGaAs design. The surface and crystalline quality of the InGaAs active layer for this device is characterized by x-ray diffraction (XRD), micro-Raman spectroscopy, energy dispersive x-rays (EDX), and Auger spectroscopy. Room temperature and 77 K photoluminescence (PL) and transmission measurements indicate the near infrared responsivity (1.2 - 1.7 micrometers ) of the InGaAs active layer. Reflection mode measurements of the photoresponse (PR) in an ultra high vacuum environment produced white light sensitivities of 100 (mu) A/lumen and quantum efficiencies of approximately 1% for wavelengths of 1300 - 1600 nm at 300 K. Sealed image tubes were created, and early sealed tube results show low quantum efficiencies (approximately 0.1% 1550 nm) due to nonoptimized active layer thickness.

Paper Details

Date Published: 15 November 1993
PDF: 9 pages
Proc. SPIE 1952, Surveillance Technologies and Imaging Components, (15 November 1993); doi: 10.1117/12.161402
Show Author Affiliations
Joseph P. Estrera, Varo, Inc. (United States)
Steve Lambert, Varo, Inc. (United States)
Keith T. Passmore, Varo, Inc. (United States)
David L. Phillips, Varo, Inc. (United States)
Stan M. Vernon, Spire Corp. (United States)
Robert Glosser, Univ. of Texas/Dallas (United States)
William E. Flynt, Varo, Inc. (United States)
M. A. Rector, Varo, Inc. (United States)

Published in SPIE Proceedings Vol. 1952:
Surveillance Technologies and Imaging Components
Sankaran Gowrinathan; C. Bruce Johnson; James F. Shanley, Editor(s)

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