ISO 11146-2:2021 激光和激光相关类仪器 激光束参数的试验方法-射束宽度,扩张角和光束传播系数-第2部分：普通象散光束

标准编号：ISO 11146-2:2021

中文名称：激光和激光相关类仪器 激光束参数的试验方法-射束宽度,扩张角和光束传播系数-第2部分：普通象散光束

英文名称：Lasers and laser-related equipment — Test methods for laser beam widths, divergence angles and beam propagation ratios — Part 2: General astigmatic beams

发布日期：2021-07

标准范围

本文件规定了测量光束宽度（直径）、发散角和光束传输比的方法。本文件适用于一般像散光束或未知类型的光束。对于柱头像散和简单像散光束，ISO？11146？1适用。在本文件中，激光束的描述是通过维格纳分布的二阶矩，而不是光束宽度和发散角等物理量来完成的。然而，这些物理量与维格纳分布的二阶矩密切相关。在ISO/TR？11146？3中，给出了根据测量的二阶矩计算所有相关物理量的公式。

This document specifies methods for measuring beam widths (diameter), divergence angles and beam propagation ratios of laser beams. This document is applicable to general astigmatic beams or unknown types of beams. For stigmatic and simple astigmatic beams, ISO 11146？1 is applicable.Within this document, the description of laser beams is accomplished by means of the second order moments of the Wigner distribution rather than physical quantities such as beam widths and divergence angles. However, these physical quantities are closely related to the second order moments of the Wigner distribution. In ISO/TR 11146？3, formulae are given to calculate all relevant physical quantities from the measured second order moments.

标准预览图