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Development of photonic crystal based large format IR scene projection technology
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Paper Abstract

This paper describes recent results from the Extremely High Temperature Photonic Crystal System Technology (XTEMPS) technology program. The XTEMPS program has developed a Photonic Crystal (PhC) based high efficiency IR emitter array for use in the emerging generation of wide field of view high performance scene projectors. Cyan's approach provides high dynamic range, multispectral emission from SWIR to LWIR and is uniquely capable of accurately simulating very realistic system spectral signatures. The PhC array is fabricated from refractory materials to provide high radiance and long service lifetime. Cyan is teamed with Sandia National Laboratories for design and fabrication of the emitter and with Nova sensors to utilize their advanced Read In Integrated Circuit (RIIC). PhC based emitters show improved inband output power efficiency when compared to broad band "graybody" emitters due to the absence of out-of-band emission. Less electrical power is required to achieve high operating temperature, and non-Lambertian emission pattern puts a large fraction of the emitted energy into a straight ahead beam. Both effects significantly boost effective radiance output. Cyan has demonstrated pixel designs compatible with Nova's medium format RIIC, which ensures high apparent output temperatures with modest drive currents and low operating voltages of less than five volts. Unit cell pixel structures for high radiative efficiency have been demonstrated and arrays using PhC optimized for up to four spectral bands have been successfully patterned and fabricated into high yield wafers.

Paper Details

Date Published: 10 May 2012
PDF: 11 pages
Proc. SPIE 8356, Technologies for Synthetic Environments: Hardware-in-the-Loop XVII, 835609 (10 May 2012); doi: 10.1117/12.923080
Show Author Affiliations
J. A. Wilson, Cyan Systems (United States)
B. Burckel, Sandia National Labs. (United States)
J. Caulfield, Cyan Systems (United States)
S. Cogan, Nova Teledyne (United States)
M. Massie, Nova Teledyne (United States)
R. Rapp, Air Force Research Lab. (United States)
R. Rose, Air Force Research Lab. (United States)
D. Snyder, Air Force Research Lab. (United States)

Published in SPIE Proceedings Vol. 8356:
Technologies for Synthetic Environments: Hardware-in-the-Loop XVII
James A. Buford Jr.; R. Lee Murrer Jr.; Gary H. Ballard, Editor(s)

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