Terahertz near-field microscopy with a fast quantum-well photodetector

Fucheng Qiu,J C Cao,Chang Wang,Huabin Wang,Zhiyong Tan

doi:10.1109/irmmw-thz50926.2021.9567042

Terahertz near-field microscopy with a fast quantum-well photodetector

Fucheng Qiu, J C Cao + Show 3 more

https://doi.org/10.1109/irmmw-thz50926.2021.9567042

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Publication Date: Aug 29, 2021

Affiliation: Chongqing Institute of Green and Intelligent Technology, University of Chinese Academy of Sciences, Shanghai Institute of Microsystem and Information Technology

#Scattering-type Scanning Near-field Optical Microscope #Terahertz Near-field Microscopy + Show 8 more

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Abstract

We report on a scattering-type scanning near-field optical microscope (s-SNOM) based on a terahertz quantum cascade laser (QCL) and a fast terahertz quantum-well photodetector (QWP). The natural polarization of terahertz QWP and terahertz QCL can improve the coupling efficiency. A resolution of about 60 nm is obtained.

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