Share Email Print
cover

Proceedings Paper

High photon counting efficiency in the near-IR (0.6 um--0.9 um) with a GaAs Ranicon
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Results are presented of an evaluation of the first RANICON detector with a Negative Electron Affinity (NEA) photocathode, known as the Red-RANICON. The Red-RANICON offers a photocathode responsive quantum efficiency of about 22 percent from 0.6 - 0.9 micron, yielding a significant improvement in photon counting performance when compared with multialkali (S20) photocathode detectors. The operating characteristics of the Red-RANICON are similar to standard 25-mm active-area RANICONS, with imaging formats of 512 x 512 or 1024 x 1024 pixels. Spatial resolution is currently about 80 microns FWHM and could be improved to 40 microns FWHM with a modest decrease in the photocathode to microchannel-plate gap. The application of the Red-RANICON to high-resolution imaging and other applications requiring excellent temporal resolution is discussed. Future prospects for improving the long-wavelength response and quantum yield are also explored.

Paper Details

Date Published: 1 July 1990
PDF: 6 pages
Proc. SPIE 1235, Instrumentation in Astronomy VII, (1 July 1990); doi: 10.1117/12.19083
Show Author Affiliations
Mark Clampin, Johns Hopkins Univ. (United States)
Francesco Paresce, Space Telescope Science Institute (Germany)


Published in SPIE Proceedings Vol. 1235:
Instrumentation in Astronomy VII
David L. Crawford, Editor(s)

© SPIE. Terms of Use
Back to Top