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Proceedings Paper

HgCdTe for far-infrared heterodyne detection
Author(s): Yong Dong Zhou; Jun Zhao; Rita Boreiko; Yong Chang; Yusuf Selamet; Renganathan Ashokan; Charles R. Becker; Albert Betz; Sivalingam Sivananthan
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Paper Abstract

Very long wavelength infrared (VLWIR, λc approximately 20 to 50 μm) HgTe/HgCdTe superlattices were grown by molecular beam epitaxy (MBE). The layers were characterized by means of X-ray diffraction and Fourier transform infrared spectroscopy. Photoconductive interdigitated electrode detectors for heterodyne applications in the Far-infrared wavelengths (FIR) regions were designed and fabricated. Spectral response measurements exhibit the ability of these detectors to function in the long wavelength (LWIR) to VLWIR regions. Detectivity observed at 77 K is very encouraging and could be enhanced further at lower operating temperatures.

Paper Details

Date Published: 8 December 2003
PDF: 8 pages
Proc. SPIE 5209, Materials for Infrared Detectors III, (8 December 2003); doi: 10.1117/12.507564
Show Author Affiliations
Yong Dong Zhou, Univ. of Illinois/Chicago (United States)
Jun Zhao, Univ. of Illinois/Chicago (United States)
Rita Boreiko, Univ. of Colorado/Boulder (United States)
Yong Chang, Univ. of Illinois/Chicago (United States)
Yusuf Selamet, Univ. of Illinois/Chicago (United States)
Renganathan Ashokan, Univ. of Illinois/Chicago (United States)
Charles R. Becker, Univ. of Illinois/Chicago (United States)
Univ Würzburg (Germany)
Albert Betz, Univ. of Colorado/Boulder (United States)
Sivalingam Sivananthan, Univ. of Illinois/Chicago (United States)

Published in SPIE Proceedings Vol. 5209:
Materials for Infrared Detectors III
Randolph E. Longshore; Sivalingam Sivananthan, Editor(s)

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