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GB/T 37412-2019 English PDF

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GB/T 37412-2019: Lasers and laser-related equipment - Cavity ring-down method for high reflectance measurement
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GB/T 37412-2019English359 Add to Cart 4 days [Need to translate] Lasers and laser-related equipment - Cavity ring-down method for high reflectance measurement Valid GB/T 37412-2019

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Basic data

Standard ID GB/T 37412-2019 (GB/T37412-2019)
Description (Translated English) Lasers and laser-related equipment - Cavity ring-down method for high reflectance measurement
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard L51
Classification of International Standard 31.260
Word Count Estimation 18,157
Date of Issue 2019-05-10
Date of Implementation 2019-12-01
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 37412-2019: Lasers and laser-related equipment - Cavity ring-down method for high reflectance measurement


---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.
Lasers and laser-related equipment--Cavity ring-down method for high reflectance measurement ICS 31.260 L51 National Standards of People's Republic of China Laser and laser related equipment Optical cavity ring-down high reflectivity measurement method (ISO 13142.2015, Electro-opticalsystems- Cavityring-downtechniqueforhigh-reflectancemeasurement, MOD) Published on.2019-05-10 2019-12-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword III 1 Scope 1 2 Normative references 1 3 Terms and definitions and symbols 1 4 Measurement principle 2 4.1 Overview 2 4.2 Measurement of initial cavity ring-down time and cavity reflectance 2 4.3 Test cavity ring-down time and reflectance of measured sample 4 4.4 Optical feedback cavity ring-down technique to measure high reflectivity 4 5 Test conditions and preparation 5 5.1 Test Environment 5 5.2 Samples to be tested 5 5.3 Construction of the test system 5 6 Test Process 6 6.1 Overview 6 6.2 Measurement of initial cavity ring-down time 6 6.3 Calculation of cavity reflectance 7 6.4 Measurement of test chamber ringing time 7 6.5 Calculation of reflectivity of the sample to be tested 7 6.6 Evaluation of measurement results 7 7 Error Analysis 8 7.1 Influence of instrument response time on reflectance measurement 8 7.2 Mirror reflectance measurement error 9 7.3 Test sample reflectivity measurement error 9 8 Test Report 10 Appendix A (informative) Reflectivity test results reliability test 11 Appendix B (informative) Test report 12

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard uses the redrafting method to modify the use of ISO 13142.2015 "electron optical system cavity cavity ringing high reflectivity measurement technology." Compared with ISO 13142.2015, this standard changes in structure as follows. --- Chapter 4 of the original ISO standard is the symbol and unit of measurement, changed to 3.2 of this standard; --- 6.6 test environment in the original ISO standard advanced to this standard 5.1; --- 6.2~6.5 in the original ISO standard becomes 5.3.1~5.3.4 of this standard; --- Removed references. The technical differences between this standard and ISO 13142.2015 and their reasons are as follows. ---About the normative reference documents, this standard has made technical adjustments to adapt to China's technical conditions, specific adjustments as follows. ● Replaced ISO 11145 with GB/T 15313-2008 modified to adopt international standards; ● Replace ISO 14644-1 with GB/T 25915.1-2010 equivalent to the international standard. This standard has made the following editorial changes. ---Modified the "technique" in the English name to "method"; --- Modify the standard name as "the laser and laser-related equipment cavity cavity ringing high reflectivity measurement method". Please note that some of the contents of this document may involve patents. The issuing organization of this document is not responsible for identifying these patents. This standard was proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Optical and Photonics Standardization Technical Committee (SAC/TC103). This standard was drafted. University of Electronic Science and Technology, Institute of Optoelectronic Technology, Chinese Academy of Sciences, China Institute of Ordnance Industry Standardization, Chinese workers Institute of Applied Electronics, Institute of Physics, China Institute of Engineering Physics, Laser Fusion Research Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Institute, Southwest Institute of Technical Physics, Lida Optoelectronics Co., Ltd., National Infrared and Industrial Electric Heating Product Quality Supervision and Inspection Center, Pentium Laser (Wenzhou) Co., Ltd. The main drafters of this standard. Li Bincheng, Wang Jing, Han Yanling, Cui Hao, Meng Fanping, Hu Xiaoyang, Huang Zuxin, Ren Wei, Shi Zhendong, Li Gang, Wang Feng, Ye Dahua, Li Zhichao, Yang Hongjie, Ji Wei, Yang Zhongming. Laser and laser related equipment Optical cavity ring-down high reflectivity measurement method

1 Scope

This standard specifies the measurement method for the reflectivity of laser optical components. This standard applies to the accurate measurement of the reflectivity of laser optics higher than 99%.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 15313-2008 Laser terminology (ISO 11145.2006, MOD) GB/T 25915.1-2010 Clean rooms and related controlled environments - Part 1. Air cleanliness (ISO 14644-1..1999, IDT)

3 terms and definitions and symbols

3.1 Terms and definitions The following terms and definitions as defined in GB/T 15313-2008 apply to this document. 3.1.1 Reflectivity The ratio of the reflected radiant flux or luminous flux to the incident flux for a given condition (incident light wavelength, polarization state, angle of incidence, etc.). 3.2 Using symbols and units of measure The symbols and units of measurement used in this standard are shown in Table 1. Table 1 Symbols and units of measure Serial number unit name 1 cm/s light speed in the measurement environment 2 c0 m/s speed of light in vacuum 3 h(t) impulse response function of ring-down cavity 4 h0(t) Instrument response function 5 L0, L m length of initial chamber and test chamber 6 ΔL0, ΔL m Measurement error of initial cavity and test cavity length

7 n Determination of the refractive index of air in the environment

The average reflectance of the 8 R concave cavity mirror is equal to the square root of R1 × R2

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