Research of an infrared pyroelectric sensor based THz detector and its application in CW THz imaging

Jun Yang; Xiao-jing Gong; Yan-dong Zhang

doi:10.1117/12.832753

4 August 2009 Research of an infrared pyroelectric sensor based THz detector and its application in CW THz imaging

Jun Yang, Xiao-jing Gong, Yan-dong Zhang

Proceedings Volume 7385, International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications; 738521 (2009) https://doi.org/10.1117/12.832753
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China

Abstract

Though a bolometer or calorimeter is often used as the detector in a CW THz imaging system, they are inconvenient or time consuming. Whereas a pyroelectric detector is highly desirable for that it can detect CW THz signals with sufficient speed. In this letter, a THz wave detector based on an infrared pyroelectric senor and its application in CW THz imaging are demonstrated. A responsivity of over 1200V/W at 1.89THz with the modulation frequency of less than 30Hz is achieved, and the peak signal to noise ration (SNR) is estimated to be 38dB. With this homemade THz detector and CW optically- pumped THz laser (OPTL), applications of CW THz imaging are investigated, and a spatial resolution of about 0.3mm is presented.

Citation Download Citation

Jun Yang, Xiao-jing Gong, and Yan-dong Zhang "Research of an infrared pyroelectric sensor based THz detector and its application in CW THz imaging", Proc. SPIE 7385, International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications, 738521 (4 August 2009); https://doi.org/10.1117/12.832753

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