Experimental Study on Traceability of Absolute Radiometer to Cryogenic Radiometer

Junchao Zhang; Nan Xu; Ning Xu; Haifeng Meng; Wende Liu; Chuan Cai; Bifeng Zhang; Shuai Man; Meng Wang; Yinliang Li; Limin Xiong

doi:10.3788/AOS202242.0512006

Acta Optica Sinica, Volume. 42, Issue 5, 0512006(2022)

Experimental Study on Traceability of Absolute Radiometer to Cryogenic Radiometer

Junchao Zhang^*, Nan Xu, Ning Xu, Haifeng Meng, Wende Liu, Chuan Cai, Bifeng Zhang, Shuai Man, Meng Wang, Yinliang Li, and Limin Xiong

Author Affiliations

Division of Metrology in Optics and Laser, National Institute of Metrology, Beijing 100029, China

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Figures & Tables(6)

Fig. 1. Reflectivity curve of black coating in 250--2500 nm

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Fig. 2. Experimental device diagram of trap detector tracing to cryogenic radiometer

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Fig. 3. Experimental device diagram of absolute radiometer tracing to trap detector

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Table 1. Calibration data of absolute power responsivity of trap detector (0901^#)
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Table 1. Calibration data of absolute power responsivity of trap detector (0901^#)
Wavelength /nm Power responsivity /( A·W^-1)
488 0.390860
514 0.412614
633 0.508590
647 0.520140
752 0.604980
799 0.642560

Table 2. Irradiance output at different positions of absolute radiometer

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Table 2. Irradiance output at different positions of absolute radiometer

Spot position	Irradiance /(W·m^-2)
Spot position	Single measurement value			Average value
Center position	977.9	978.7	977.9	978.2
Move to left (1 mm)	981.0	980.7	980.2	980.6
Move to right (1 mm)	975.5	975.1	975.6	975.4
Move up (1 mm)	982.3	982.4	982.6	982.4
Move down (1 mm)	980.8	981.2	981.7	981.2

Table 3. Uncertainty assess of irradiance calibration of absolute radiometer

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Table 3. Uncertainty assess of irradiance calibration of absolute radiometer

Uncertaintycomponent	Source of uncertainty	Uncertaintytype	Uncertaintydistribution	Relativeuncertainty /%
u₁	Measurement repeatability	A	Normal	0.030
u₂	Light source instability	B	Equidistribution	0.002
u₃	Trap detector calibration	B	Normal	0.015
u₄	Interpolation calculation of standard value of trap detector	B	Equidistribution	0.030
u₅	Nonlinearity of signal amplifier and monitoring detector	B	Equidistribution	0.050
u₆	Absorptivity and wavelength flatness of black coating ofabsolute radiometer	B	Equidistribution	0.030
u₇	Absolute radiometer position response non-uniformity	B	Equidistribution	0.410
u₈	Aperture calibration	B	Normal	0.100

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Junchao Zhang, Nan Xu, Ning Xu, Haifeng Meng, Wende Liu, Chuan Cai, Bifeng Zhang, Shuai Man, Meng Wang, Yinliang Li, Limin Xiong. Experimental Study on Traceability of Absolute Radiometer to Cryogenic Radiometer[J]. Acta Optica Sinica, 2022, 42(5): 0512006

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Paper Information

Category: Instrumentation, Measurement and Metrology

Received: Aug. 17, 2021

Accepted: Sep. 26, 2021

Published Online: Mar. 8, 2022

The Author Email: Zhang Junchao (zhangjc@nim.ac.cn)

DOI:10.3788/AOS202242.0512006

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Calibration data of absolute power responsivity of trap detector (0901#)

Table 1. Calibration data of absolute power responsivity of trap detector (0901#)

Table 2. Irradiance output at different positions of absolute radiometer

Table 2. Irradiance output at different positions of absolute radiometer

Table 3. Uncertainty assess of irradiance calibration of absolute radiometer

Table 3. Uncertainty assess of irradiance calibration of absolute radiometer

Table 1. Calibration data of absolute power responsivity of trap detector (0901^#)

Table 1. Calibration data of absolute power responsivity of trap detector (0901^#)