HgCdTe for far-infrared heterodyne detection

Yong Dong Zhou; Jun Zhao; Rita Boreiko; Yong Chang; Yusuf Selamet; Renganathan Ashokan; Charles R. Becker; Albert Betz; Sivalingam Sivananthan

doi:10.1117/12.507564

8 December 2003 HgCdTe for far-infrared heterodyne detection

Yong Dong Zhou, Jun Zhao, Rita Boreiko, Yong Chang, Yusuf Selamet, Renganathan Ashokan, Charles R. Becker, Albert Betz, Sivalingam Sivananthan

Author Affiliations +

Proceedings Volume 5209, Materials for Infrared Detectors III; (2003) https://doi.org/10.1117/12.507564
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

Very long wavelength infrared (VLWIR, λ_c 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.

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Yong Dong Zhou, Jun Zhao, Rita Boreiko, Yong Chang, Yusuf Selamet, Renganathan Ashokan, Charles R. Becker, Albert Betz, and Sivalingam Sivananthan "HgCdTe for far-infrared heterodyne detection", Proc. SPIE 5209, Materials for Infrared Detectors III, (8 December 2003); https://doi.org/10.1117/12.507564

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