Study on the measurement of absolute spectral responsivity of terahertz detector

Hongyuan Liu; Bin Wu; Tao Jiang; Yanzhao Yang; Hongchao Wang; Jingsong Li; Gaohang Cai

doi:10.1117/12.2624834

27 March 2022 Study on the measurement of absolute spectral responsivity of terahertz detector

Hongyuan Liu, Bin Wu, Tao Jiang, Yanzhao Yang, Hongchao Wang, Jingsong Li, Gaohang Cai

Proceedings Volume 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications; 121696U (2022) https://doi.org/10.1117/12.2624834
Event: Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 2021, Kunming, China

Abstract

Absolute spectral responsivity is one of the important technical parameters of the detector. With the development of terahertz detection technology, accurate measurement of absolute spectral responsivity of terahertz detector becomes more and more important. In this paper, the relative spectral response of 2 THz ~ 10 THz is measured based on the reflection method. The response rates of 2.52 THz and 4.25 THz are measured by using CO₂ pumped gas laser as the pump light source. The absolute spectral response of 2 THz ~ 10 THz detector is obtained, and the two frequency points of 2.52 THz and 4.25 THz response rates and relative spectral response are mutually verified, The absolute response ratio of 2.52 THz and 4.25 THz is 0.753, and the relative spectral response mean value is 0.749. The difference between them is only 0.004. Therefore, the method used in this paper to measure the relative spectral response of THz detectors is feasible. The system can provide more accurate data for manufacturers and users who produce and use terahertz detectors, and can meet the needs of absolute spectral response measurement of terahertz detectors.

Citation Download Citation

Hongyuan Liu, Bin Wu, Tao Jiang, Yanzhao Yang, Hongchao Wang, Jingsong Li, and Gaohang Cai "Study on the measurement of absolute spectral responsivity of terahertz detector", Proc. SPIE 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 121696U (27 March 2022); https://doi.org/10.1117/12.2624834

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available