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Proceedings Paper

Design and development of high quantum efficiency large area UV focal plane arrays for photon counting applications
Author(s): E. James Egerton; Ashok K. Sood; Robert A. Bell; Yash R. Puri; Jacob Roginsky; Melville P. Ulmer; Bruce W. Wessels; Timothy Cook
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Paper Abstract

In this paper we will present innovative design approach for UV Focal Plane Array for Photon Counting Applications. This Focal Plane includes the building a large area silicon micro-channel plate (MCP) using GaN photocathode. In this paper, we will present the design and simulation of silicon micro-channel plate with GaN photocathode with large area array with 2 micron pores and 3 micron pitch. We will also present results for the ICP-RIE process to fabricate 2 micron pores, and Growth of high conductivity GaN photocathodes using MOCVD to produce 40% QE. We will also discuss approaches for development of readout architecture and circuit for Silicon based MCP 4096x4096 UV FPA. The readout architecture scheme uses a series of charge sensitive amplifiers (CSA) to boost the charge received on each anode. The signal from each CSA is then passed into a shaping amplifier (SA) that produces a smooth waveform. The peak of the smoothed waveform is captured by a sample and hold (S/H) circuit that holds the signal until an analog to digital (A/D) converter can sample it. Details of the ROIC circuit will be presented.

Paper Details

Date Published: 2 October 2006
PDF: 7 pages
Proc. SPIE 6389, Active and Passive Optical Components for Communications VI, 63890R (2 October 2006); doi: 10.1117/12.692774
Show Author Affiliations
E. James Egerton, Magnolia Optical Technologies, Inc. (United States)
Ashok K. Sood, Magnolia Optical Technologies, Inc. (United States)
Robert A. Bell, Magnolia Optical Technologies, Inc. (United States)
Yash R. Puri, Magnolia Optical Technologies, Inc. (United States)
Jacob Roginsky, Naval Surface Warfare Ctr. (United States)
Melville P. Ulmer, Northwestern Univ. (United States)
Bruce W. Wessels, Northwestern Univ. (United States)
Timothy Cook, Boston Univ. (United States)


Published in SPIE Proceedings Vol. 6389:
Active and Passive Optical Components for Communications VI
Achyut K. Dutta; Yasutake Ohishi; Niloy K. Dutta; Jesper Moerk, Editor(s)

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