Vol. 101

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2021-11-08

Improvement of IR Pyroelectric Detector Performance in THz Range Using Wavelength-Scale Sphere-Based Terajet Effect

By Oleg Minin, Igor Minin, Yanfeng Li, and Jiaguang Han
Progress In Electromagnetics Research Letters, Vol. 101, 29-34, 2021
doi:10.2528/PIERL21071901

Abstract

An infrared (IR) pyroelectric detector for applying to the terahertz (THz) waveband that uses diffraction limited focusing of the THz beam on the sensitive area of the detector is studied. The signal to be detected is coupled to the optical window of the detector through a two-wavelength diameter polytetrafluoroethylene spherical particle-lens based on the terajet effect. We have experimentally demonstrated an enhancement of the IR detector sensitivity by 5.6 dB at 0.2 THz without degradation of the noise equivalent power value. The results show that the proposed method could be applied to increase the sensitivity of various commercial IR sensors in the THz range, requiring no modification of the internal structure and may be applied also to acoustics and plasmonics.

Citation


Oleg Minin, Igor Minin, Yanfeng Li, and Jiaguang Han, "Improvement of IR Pyroelectric Detector Performance in THz Range Using Wavelength-Scale Sphere-Based Terajet Effect," Progress In Electromagnetics Research Letters, Vol. 101, 29-34, 2021.
doi:10.2528/PIERL21071901
http://jpier.org/PIERL/pier.php?paper=21071901

References