BS EN ISO 11146-2-2005 激光和激光相关设备.激光束宽度、发散角和束扩散率的试验方法.一般象散束

标准号：BS EN ISO 11146-2-2005
中文标准名称：激光和激光相关设备.激光束宽度、发散角和束扩散率的试验方法.一般象散束
英文标准名称：Lasers and laser-related equipment - Test methods for laser beam widths, divergence angles and beam propagation ratios - General astigmatic beams
标准类型：L51
发布日期：2005/3/30 12:00:00
实施日期：2005/3/30 12:00:00
中国标准分类号：L51
国际标准分类号：31.260
适用范围：ISO 11146-2:2005 specifies methods for measuring beam widths (diameter), divergence angles and beam propagation ratios of laser beams. ISO 11146-2:2005 is applicable to general astigmatic beams or unknown types of beams. For stigmatic and simple astigmatic beams, ISO 11146-1 is applicable.Within ISO 11146-2:2005, 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.