Single Calibration Technique of Autocorrelator Based on a Flat Crystal

Xutong Li; Xiaoping Ouyang; Xuejie Zhang; Zhan Li; Liangze Pan; Yingming Xu; Lin Yang; Baoqiang Zhu; Jian Zhu; Jianqiang Zhu

doi:10.3788/CJL202148.0704002

Chinese Journal of Lasers, Volume. 48, Issue 7, 0704002(2021)

Single Calibration Technique of Autocorrelator Based on a Flat Crystal

Xutong Li^1,2, Xiaoping Ouyang^1、*, Xuejie Zhang¹, Zhan Li¹, Liangze Pan¹, Yingming Xu¹, Lin Yang¹, Baoqiang Zhu¹, Jian Zhu³, and Jianqiang Zhu¹

Author Affiliations

¹Joint Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

²University of Chinese Academy of Sciences, Beijing, 100049, China

³Shanghai Institute of Laser Plasma, China Academy of Engineering Physics, Shanghai 201800, China

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Figures & Tables(10)

Fig. 1. Single calibration optical path diagram of picosecond autocorrelator based on flat crystal

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Fig. 2. Theoretical CCD signal distribution in the calibration experiment

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Fig. 3. Analysis of the deviation of the flat crystal placement angle α. (a) Deflection of flat crystal placement angle; (b) beam shift on the surface of autocorrelation crystal

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Fig. 4. Variation curve of relative error δ with deflection angle α

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Fig. 5. Experimental data analysis. (a) Autocorrelation signal detected on the CCD; (b) normalized longitudinal integrated intensity

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Fig. 6. CCD longitudinal integral signal strength during calibration with different methods

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Table 1. Amount of change in the thickness h, refractive index n, deflection angle α of the flat crystal (the relative error of time resolution is 2%,5%,10%)
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Table 1. Amount of change in the thickness h, refractive index n, deflection angle α of the flat crystal (the relative error of time resolution is 2%,5%,10%)
Relative error δ /% 2 5 10
Δh /mm 0.02 0.05 0.10
Δn 0.029 0.073 0.145
Δα /(°) 16.6 26.2 37.2

Table 2. Measurement data of thickness h of flat crystal
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Table 2. Measurement data of thickness h of flat crystal
i 1 2 3 4 5 6
h_i /mm 1.020 1.020 1.020 1.019 1.021 1.019
Δ_i=(h_i- $\bar{h}$ ) /mm 0 0 0 -0.001 0.001 -0.001

Table 3. Statistics of time resolution calibration results of the three calibration methods

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Table 3. Statistics of time resolution calibration results of the three calibration methods

Calibration method	Optical path retarder	Discrimination rate board	Flat crystal
Time resolution /(fs·pixel^-1)	214.27	208.00	217.88
Relative uncertainty at P=0.95 /%	1.42	6.69	1.50
Uncertainty at P=0.95 /(fs·pixel^-1)	3.04	14.48	3.26

Table 4. Performance comparison of three calibration methods

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Table 4. Performance comparison of three calibration methods

Calibration method	Optical path retarder	Discrimination rate board	Flat crystal
Single calibration	No	Yes	Yes
Light source	Femto/picosecond	Any	Femto/picosecond
Calibration measurement	No	No	Yes
Device placement requirements	No	Close to the nonlinear crystal	No

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Xutong Li, Xiaoping Ouyang, Xuejie Zhang, Zhan Li, Liangze Pan, Yingming Xu, Lin Yang, Baoqiang Zhu, Jian Zhu, Jianqiang Zhu. Single Calibration Technique of Autocorrelator Based on a Flat Crystal[J]. Chinese Journal of Lasers, 2021, 48(7): 0704002

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Paper Information

Category: measurement and metrology

Received: Sep. 2, 2020

Accepted: Oct. 26, 2020

Published Online: Mar. 29, 2021

The Author Email: Ouyang Xiaoping (oyxp@siom.ac.cn)

DOI:10.3788/CJL202148.0704002

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Amount of change in the thickness h, refractive index n, deflection angle α of the flat crystal (the relative error of time resolution is 2%,5%,10%)

Table 1. Amount of change in the thickness h, refractive index n, deflection angle α of the flat crystal (the relative error of time resolution is 2%,5%,10%)

Table 2. Measurement data of thickness h of flat crystal

Table 2. Measurement data of thickness h of flat crystal

Table 3. Statistics of time resolution calibration results of the three calibration methods

Table 3. Statistics of time resolution calibration results of the three calibration methods

Table 4. Performance comparison of three calibration methods

Table 4. Performance comparison of three calibration methods