UNE EN ISO 11146-2:2021
Lasers and laser-related equipment - Test methods for laser beam widths, divergence angles and beam propagation ratios - Part 2: General astigmatic beams (ISO 11146-2:2021) (Endorsed by Asociación Española de Normalización in September of 2021.)
Láseres y equipos relacionados. Métodos de ensayo para anchuras del haz láser, ángulos de divergencia y factor de propagación del haz. Parte 2: Haces astigmáticos generales. (ISO 11146-2:2021) (Ratificada por la Asociación Española de Normalización en septiembre de 2021.)
| Standard number: | UNE EN ISO 11146-2:2021 |
| Pages: | 27 |
| Released: | 2021-09-01 |
| Status: | Standard |
UNE EN ISO 11146-2:2021
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.