Novel calibration optical path of cryogenic radiometer

Weiwei Pang; Xiaobing Zheng; Jianjun Li; Xueshun Shi; Haoyu Wu; Maopeng Xia; Dongyang Gao; Jianmin Shi; Tao Qi; Qing Kang

doi:doi:10.3788/COL201513.051201

Chinese Optics Letters, 2015, 13 (5): 051201, Published Online: Sep. 20, 2018

Novel calibration optical path of cryogenic radiometer Download： 1126次

Weiwei Pang ¹Xiaobing Zheng ¹Jianjun Li ^1,*Xueshun Shi ²Haoyu Wu ¹Maopeng Xia ¹Dongyang Gao ¹Jianmin Shi ¹Tao Qi ¹Qing Kang ¹

Author Affiliations

¹ Key Laboratory of Optical Calibration and Characterization, Chinese Academy of Sciences, Hefei 230031, China

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

Figures & Tables

Table1. Uncertainty on Measuring the Laser Power of Cryogenic Radiometera

	Wavelength (nm)
Sources	488	514	633	676	786	830	944
Electrical power	0.31	0.362	0.389	0.296	0.260	0.174	0.140
Window transmittance	1.525	0.609	1.529	0.437	0.453	0.521	0.520
Receiver absorptance				0.1
Heating nonequivalence				0.087
Total uncertainty	1.541	0.652	1.548	0.488	0.539	0.565	0.555
Percent	98.96	93.40	98.77	89.55	84.04	92.21	93.69

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Table2. Technique Parameter of Cryogenic Radiometer at the Anhui Institute of Optics and Fine Mechanics

Technical Specifications
Instrument model	Cryorad II
Spectrum	0.25–50 μm
Receiver response	$2 K {mW}^{- 1}$
Dynamic range	Max to 0.25 mW
Absolute accuracy	$\pm 0.005 %$
Receiver absorptance	$> 0.99998$ (632.8 nm)
Refrigeration mode	Liquid nitrogen
	Liquid helium
Calibration structure	Y-type
Demount Brewster window	No

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Table3. Comparison on Responsivity of Transfer Detector in Novel Calibration Structure and Traditional Calibration Structure

	Absolute Spectral Responsivity (A/W)
Detector	Traditional^a (2008)	Novel (2014)
Trap-B	0.5069	0.5045
K	0.4%

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Table4. Compare of Combine Uncertainty of Transfer Detector between Traditional and Novela

Source	Traditional Calibration Structure (2008)^b	Novel Calibration Optical Path (2014)
Electrical power	0.389	0.671
Window transmittance	1.529	—
Receiver absorptance	0.1	0.1
Heating nonequivalence	0.087	0.05195
Laser power total uncertainty	1.5832	0.6804
Linearity	0.434
Spatial uniformity	1.99
Polarization sensitivity	0.492
Stability	0.687
Output V	0.025	0.0244
Total uncertainty ( $k = 1$ )	2.715	2.321

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Weiwei Pang, Xiaobing Zheng, Jianjun Li, Xueshun Shi, Haoyu Wu, Maopeng Xia, Dongyang Gao, Jianmin Shi, Tao Qi, Qing Kang. Novel calibration optical path of cryogenic radiometer[J]. Chinese Optics Letters, 2015, 13(5): 051201.

Novel calibration optical path of cryogenic radiometer Download： 1126次

Fig. 1. Laser power measurement based on cryogenic radiometer.

Fig. 2. Transfer detector on calibration of cryogenic radiometer.

Fig. 3. Novel structure on the calibration of cryogenic radiometer.

Fig. 4. Transfer detector installed in detector cavity.

Fig. 5. Optical path on the calibration of cryogenic radiometer.

Table1. Uncertainty on Measuring the Laser Power of Cryogenic Radiometera

Table2. Technique Parameter of Cryogenic Radiometer at the Anhui Institute of Optics and Fine Mechanics

Table3. Comparison on Responsivity of Transfer Detector in Novel Calibration Structure and Traditional Calibration Structure

Table4. Compare of Combine Uncertainty of Transfer Detector between Traditional and Novela

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Novel calibration optical path of cryogenic radiometer Download： 1126次

Fig. 1. Laser power measurement based on cryogenic radiometer.

Fig. 2. Transfer detector on calibration of cryogenic radiometer.

Fig. 3. Novel structure on the calibration of cryogenic radiometer.

Fig. 4. Transfer detector installed in detector cavity.

Fig. 5. Optical path on the calibration of cryogenic radiometer.

Table1. Uncertainty on Measuring the Laser Power of Cryogenic Radiometera

Table2. Technique Parameter of Cryogenic Radiometer at the Anhui Institute of Optics and Fine Mechanics

Table3. Comparison on Responsivity of Transfer Detector in Novel Calibration Structure and Traditional Calibration Structure

Table4. Compare of Combine Uncertainty of Transfer Detector between Traditional and Novela

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