Low-frequency noise spectra of high quality MCT photoconductors

摘要

Low-frequency flicker-noise "1/f' spectra were examined on Photoconductive Mercury-Cadmium Telluride / Hg_(1-x)Cd_xTe (PC MCT) infrared radiation detectors. Noise measurements were performed on PC MCT detectors with responsivity peak wavelength λ_p from 3,0 to 5,5 μm and from 10,5 to 12,0 μm at operating temperature T_(op) ≈ 205 - 210 K and ≈ 78 K respectively. Tested high quality PC MCT infrared radiation detectors show extremely low spectral density of excess "1/f" noise and low values of noise-knee frequency from 10 to 150 Hz and demonstrate high-level performance.