GB/T 41572-2022 English PDF

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GB/T 41572-2022: Measurement methods for main parameters of pulsed laser in time-domain
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Basic data

Standard ID: GB/T 41572-2022 (GB/T41572-2022)
Description (Translated English): Measurement methods for main parameters of pulsed laser in time-domain
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: L51
Word Count Estimation: 34,316
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 41572-2022: Measurement methods for main parameters of pulsed laser in time-domain

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Measurement methods for main parameters of pulsed laser in time-domain ICS 31.260 CCSL51 National Standards of People's Republic of China Measurement method of main parameters of pulsed laser in time domain Published on 2022-07-11 2023-02-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration directory Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Main parameter characteristics 3 4.1 Overview 3 4.2 Pulse time characteristics 3 4.3 Pulse Spectral Characteristics 3 5 Measurement Conditions 4 5.1 Basic requirements 4 5.2 Requirements for the normal operation of the laser under test 4 5.3 Safety Protection 4 5.4 Measurement preparation 4 6 Measurement method 4 6.1 Rise/Fall Time 4 6.2 Pulse width 6 6.3 Pulse repetition frequency 13 6.4 Time Jitter of Electrical and Optical Signals 14 6.5 Optical Signal Time Jitter 15 Appendix A (Informative) Pulse Width Measurement Method 18 Appendix B (informative) Ultrashort pulse measurement method 20 Appendix C (normative) Common Deconvolution Factors 26 Appendix D (Informative) Time Jitter Measurement Method 27 Reference 29 Figure 1 Block diagram of a device for measuring rise/fall times5 Figure 2 Schematic diagram of measuring rise/fall time 5 Fig.3 Schematic diagram of pulse width measurement by photodetector method7 Figure 4 Schematic diagram of the principle of measuring pulse width by autocorrelation method 8 Figure 5 Block diagram of the device for measuring pulse width by autocorrelation method 8 Fig.6 Schematic diagram of interference autocorrelation curve9 Fig.7 Schematic diagram of intensity autocorrelation curve without background9 Figure 8 Block diagram of FROG measuring pulse width equipment 10 Figure 9 FROG measurement pulse width example 11 Figure 10 SPIDER measurement pulse width equipment block diagram 12 Figure 11 Example of femtosecond laser interference spectrum signal 12 Figure 12 Example of SPIDER measuring femtosecond laser pulse width 13 Figure 13 Block diagram of pulse repetition frequency measurement equipment 13 Figure 14 Example of recorded optical pulse period 14 Figure 15 Block diagram of time jitter measurement equipment for electrical and optical signals 14 Figure 16 Example of electrical signal and optical signal delay measurement data 15 Figure 17 Block diagram of optical signal time jitter measurement equipment 16 Figure 18 Example of high harmonic RF spectrum measurement 17 Figure 19 Spectrum Example 17 of the 19th Harmonic Figure A.1 Schematic diagram of the optical path of the photodetector method equipment 18 Figure B.1 Schematic diagram of the optical path of the intensity autocorrelation method (non-collinear) device 21 Figure B.2 Schematic diagram of the optical path of the interference autocorrelation method equipment 22 Figure B.3 Pulse autocorrelation curve with and without chirp 22 Figure B.4 Schematic diagram of the optical path of the FROG equipment 23 Figure B.5 Schematic diagram of the optical path of the SPIDER device 25 Figure D.1 Noise power spectrum 27 Figure D.2 Schematic diagram of high harmonic radio frequency spectrum analysis method 28 Table C.1 Autocorrelation deconvolution factor k=τac/τH 26

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" drafted. Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by China Machinery Industry Federation. This document is under the jurisdiction of the National Optical Radiation Safety and Laser Equipment Standardization Technical Committee (SAC/TC284). This document is drafted by. Institute of Aerospace Information Innovation, Chinese Academy of Sciences, Chinese Academy of Metrology, Peking University, Chinese Academy of Sciences Institute of Science, Wuhan Huagong Laser Engineering Co., Ltd., Huagong Farley Lecce Welding System Engineering Co., Ltd., Suzhou Pavo Laser Technology Co., Ltd. Co., Ltd., Zhongshan Indium Laser Technology Co., Ltd., Wuhan Raycus Fiber Laser Technology Co., Ltd., Shandong Huaguang Optoelectronics Co., Ltd. Company, Han's Laser Technology Industry Co., Ltd., Shenzhen Dingxin Technology Co., Ltd. The main drafters of this document. Ma Yunfeng, Fan Zhongwei, Wu Aiping, Deng Yuqiang, Zhang Zhigang, Zhao Peng, Cheng Wang, Wang Zhaohua, Li Ting, Zhou Xiaozhuang, Guo Guangyan, Bai Fang, Wang Xianzhi, Sun Qing, Shi Chaohui, Li Ying, Yan Dapeng, Xiao Chengfeng, Zeng Lixia, Gao Fengxiang. Measurement method of main parameters of pulsed laser in time domain

1 Scope

This document defines the terms and definitions of the main parameters of the pulsed laser in the time domain, describes the characteristics of its main parameters, specifies the measurement conditions and measurements. quantitative method. This document is applicable to the measurement of main parameters in the time domain of pulsed lasers whose duration is in the range of 3fs~0.25s, and the pulse width is more than 0.25s The laser reference is performed.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document. GB 7247.1 Safety of Laser Products Part 1.Equipment Classification and Requirements GB/T 15313 Laser Terminology GB/T 15490 General Specification for Solid State Lasers JB/T 12632 Fiber Laser JJF1493-2014 Ultrashort optical pulse autocorrelator calibration specification ISO 11145.2018 Optical and photonics lasers and laser equipment vocabulary and symbols (Opticsandphotonics-Lasers ISO 15367-1.2003 Lasers and laser-related equipment—Test methods for the determination of the wavefront shape of laser beams—Part 1.Terminology and

3 Terms and Definitions

GB/T 15313, JJF1493-2014, ISO 11145.2018 and ISO 15367-1.2003 and the following terms and definitions applies to this document. 3.1 pulsed laser pulsedlaser Laser light radiated in the form of a single pulse or a sequence of pulses with a pulse duration of less than 0.25s. [Source. ISO 11145.2018, 3.19.3] 3.2 rising edge of the pulse Pulse laser duration waveform rising curve. 3.3 falling edge of the pulse Pulse laser duration waveform drop curve. ......

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