Detection of terahertz and sub-terahertz wave radiation based on hot-carrier effect in narrow-gap Hg1−xCdxTe

Abstract

We have proposed and developed terahertz and subterahertz wave detector using hot-carrier effect in narrow-gap Hg1−xCdxTe. Epitaxial Hg1−xCdxTe-layers were integrated into dipole antennas. The response of Hg1−xCdxTe hot-electron bolometer was measured in the range of frequencies 0.037–1.58 THz, in the temperature region T = 68–300 K at various bias currents. A bolometer theoretical model was developed and the experimental results confirm the model main conclusions.