Novel calibration optical path of cryogenic radiometer

	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

Table 2. Technique Parameter of Cryogenic Radiometer at the Anhui Institute of Optics and Fine Mechanics

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Table 2. 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

Table 3. Comparison on Responsivity of Transfer Detector in Novel Calibration Structure and Traditional Calibration Structure
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Table 3. 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%

Table 4. Compare of Combine Uncertainty of Transfer Detector between Traditional and Novela

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Table 4. 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," Chin. Opt. Lett. 13, 051201 (2015)

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Paper Information

Category: Instrumentation, measurement, and metrology

Received: Jan. 13, 2015

Accepted: Mar. 16, 2015

Published Online: Sep. 20, 2018

The Author Email: Jianjun Li (jjli@aiofm.ac.cn)

DOI:10.3788/COL201513.051201

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Uncertainty on Measuring the Laser Power of Cryogenic Radiometera

Table 1. Uncertainty on Measuring the Laser Power of Cryogenic Radiometera

Table 2. Technique Parameter of Cryogenic Radiometer at the Anhui Institute of Optics and Fine Mechanics

Table 2. Technique Parameter of Cryogenic Radiometer at the Anhui Institute of Optics and Fine Mechanics

Table 3. Comparison on Responsivity of Transfer Detector in Novel Calibration Structure and Traditional Calibration Structure

Table 3. Comparison on Responsivity of Transfer Detector in Novel Calibration Structure and Traditional Calibration Structure

Table 4. Compare of Combine Uncertainty of Transfer Detector between Traditional and Novela

Table 4. Compare of Combine Uncertainty of Transfer Detector between Traditional and Novela