Responsivity Calibration Technology for Pyroelectric Terahertz Detector

Bin Wu; Hongyuan Liu; Yixin Wang; Hongchao Wang; Qiantao Cao; Peng Zhang; Chengping Ying

doi:10.3788/AOS202242.0404001

Acta Optica Sinica, Volume. 42, Issue 4, 0404001(2022)

Responsivity Calibration Technology for Pyroelectric Terahertz Detector

Bin Wu^1,2、*, Hongyuan Liu², Yixin Wang³, Hongchao Wang², Qiantao Cao², Peng Zhang², and Chengping Ying²

Author Affiliations

¹Science and Technology on Electronic Test & Measurement Laboratory, Qingdao, Shandong 266555, China;

²The 41st Institute of China Electronics Technology Group Corporation, Qingdao, Shandong 266555, China

³International College of Chongqing University of Posts and Telecommunications, Chongqing 400065, China

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Figures & Tables(5)

Fig. 1. Schematic diagram of responsivity calibration system for terahertz detector

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Table 1. Uncertainty analysis of responsivity calibration system

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Table 1. Uncertainty analysis of responsivity calibration system

Source of uncertainty	Uncertainty	Uncertainty type	Probability distribution
Responsivity of standard detector	u₁=2.0%	B	Uniform
Output measurement of DUT	u₂=9.0×10^-5	B	Uniform
Output measurement of standard detector	u₃=9.0×10^-5	B	Uniform
Stability of terahertz source	u₄=1.2%	B	Uniform
Environment noise	u₅=0.43%	A	Uniform

Table 2. Comparison of terahertz detector calibration research works

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Table 2. Comparison of terahertz detector calibration research works

Institution	Calibrationfrequency /THz	Uncertainty of powerstandard (k=1)	Uncertainty ofcalibration system (k=1)	Universality
PTB	1.00--5.00	1.6%	2.0%	Good
NIST	0.76, 2.52	3.3%
NMIJ	0.30, 1.00, 1.50	2.1%
NIM	0.60--0.90, 2.52	1.6%	2.0%	Good
Our group	0.84--7.00	2.0%	2.4%	Good

Table 3. Calibration data of 12D-3S-VP type terahertz detector
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Table 3. Calibration data of 12D-3S-VP type terahertz detector
Time U_Ns U_s U_Nd U_d R_d,corrected
1 0.006 1.457 0.005 1.052 197.999
2 0.006 1.421 0.007 1.024 197.219
3 0.004 1.385 0.005 0.996 196.908
4 0.005 1.411 0.004 1.031 200.433
5 0.006 1.422 0.006 1.028 198.049
6 0.005 1.386 0.005 0.987 195.120

Table 4. Calibration data of 6342A type terahertz detector
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Table 4. Calibration data of 6342A type terahertz detector
Time U_Ns U_s U_Nd U_d R_d,corrected
1 0.005 1.433 0.006 1.876 359.333
2 0.005 1.413 0.004 1.833 356.447
3 0.004 1.396 0.004 1.854 364.684
4 0.005 1.393 0.006 1.844 363.363
5 0.007 1.417 0.005 1.855 360.028
6 0.006 1.393 0.004 1.871 369.362

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Bin Wu, Hongyuan Liu, Yixin Wang, Hongchao Wang, Qiantao Cao, Peng Zhang, Chengping Ying. Responsivity Calibration Technology for Pyroelectric Terahertz Detector[J]. Acta Optica Sinica, 2022, 42(4): 0404001

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