GB/T 32561.5-2022Measuring methods for chalcogenide infrared optical glass—Part 5:Stress birefringence (English PDF)

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.

This document is part 5 of GB/T 32561 "Infrared Optical Chalcogenide Glass Test Methods". GB/T 32561 has issued the following part.

--- Part 1: Uniformity;

--- Part 2: Stripe degree;

--- Part 3: Impurities;

--- Part 4: Optical absorption coefficient;

--- Part 5: Stress birefringence.

Introduction

Infrared optical chalcogenide glass has a wide range of applications in thermal imaging, infrared sensing, nonlinear devices, phase change storage, photovoltaics and other fields. its products During production, sale and use, it is necessary to obtain its performance parameters with standardized measurement methods. Unify the measurement methods of various optical and electrical parameters, Establish the best order for the production, sales, and use of infrared optical chalcogenide glass to ensure the comparability and reproducibility of test results, so as to promote relevant co-benefits of the parties. GB/T 32561 "Infrared Optical Chalcogenide Glass Test Method" describes the performance parameters of infrared optical chalcogenide glass The measurement method is intended to consist of 5 parts.

--- Part 1: Uniformity. The purpose is to specify a test method for the internal uniformity of infrared optical chalcogenide glasses.

--- Part 2: Stripe degree. The purpose is to specify a test method for the degree of internal striation of infrared optical chalcogenide glasses.

--- Part 3: Impurities. The purpose is to specify a test method for internal impurities in infrared optical chalcogenide glasses.

--- Part 4: Optical absorption coefficient. The purpose is to specify a test method for the optical absorption coefficient of infrared optical chalcogenide glasses.

--- Part 5: Stress birefringence. The purpose is to specify a test method for the stress birefringence of infrared optical chalcogenide glasses.

The five parts of the GB/T 32561 series of standards correspond to the five important performance parameters of infrared optical chalcogenide glass during use. Number test method.

This document is part 5 of GB/T 32561, which is aimed at the test method for stress birefringence of infrared chalcogenide glasses.

Stress birefringence is used to characterize the refractive index change of light waves with different polarization directions when there is stress inside the chalcogenide glass.

The key technical indicators that glass manufacturers must provide when producing and selling products. This document is in the first 4 sections (Uniformity, Streaks, Miscellaneous Quantitative testing and characterization of the internal stress of chalcogenide glass products on the basis of quality, light absorption coefficient, etc., to guide research Inspection and acceptance of chalcogenide glass products by the manufacturing, production and use departments to promote the stability and consistency of product quality.

1 Scope

This document describes the test principle, test conditions, instruments, samples, test procedures and measurement of stress birefringence of infrared optical chalcogenide glasses. Test methods such as data processing.

This document applies to the testing of stress birefringence of infrared optical chalcogenide glasses.

Note: Other infrared optical glasses can be used for reference.

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/T 36265-2018 Infrared Optical Glass

3 Terms and Definitions

The following terms and definitions apply to this document.

4 Principles

The stress existing in the infrared optical chalcogenide glass will lead to optical anisotropy, which is measured by the quarter-wave plate method, and the polarized light passes through the sample.