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Proceedings Paper

Development of UV image intensifier tube with GaN photocathode
Author(s): I. Mizuno; T. Nihashi; T. Nagai; M. Niigaki; Y. Shimizu; K. Shimano; K. Katoh; T. Ihara; K. Okano; M. Matsumoto; M. Tachino
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Paper Abstract

We developed an UV image intensifier tube with a GaN photocathode in semi-transparent mode. In UV spectroscopy and low-light-level UV-imaging applications, there are strong demands for improved detectors which have higher quantum efficiency, low dark current, sharper wavelength cut-off response, and stable and robust characteristics. III-Nitrides semiconductor is one of the promising candidate materials to meet these demands. We developed a GaN photocathode which is epitaxially grown by MOCVD method. It has flat and high quantum efficiency from 200 nm to 360 nm. The cathode is incorporated into an image intensifier tube, which shows good gating performance and fine imaging resolution. With these improved performances, the UV image intensifier tube with GaN photocathode will expand its application fields to include UV spectroscopy and UV-imaging in low light.

Paper Details

Date Published: 15 April 2008
PDF: 11 pages
Proc. SPIE 6945, Optics and Photonics in Global Homeland Security IV, 69451N (15 April 2008); doi: 10.1117/12.778539
Show Author Affiliations
I. Mizuno, Hamamatsu Photonics K.K. (Japan)
T. Nihashi, Hamamatsu Photonics K.K. (Japan)
T. Nagai, Hamamatsu Photonics K.K. (Japan)
M. Niigaki, Hamamatsu Photonics K.K. (Japan)
Y. Shimizu, Hamamatsu Photonics K.K. (Japan)
K. Shimano, Hamamatsu Photonics K.K. (Japan)
K. Katoh, Hamamatsu Photonics K.K. (Japan)
T. Ihara, Hamamatsu Photonics K.K. (Japan)
K. Okano, Hamamatsu Photonics K.K. (Japan)
M. Matsumoto, Hamamatsu Photonics K.K. (Japan)
M. Tachino, Hamamatsu Photonics K.K. (Japan)

Published in SPIE Proceedings Vol. 6945:
Optics and Photonics in Global Homeland Security IV
Craig S. Halvorson; Daniel Lehrfeld; Theodore T. Saito, Editor(s)

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