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

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