Reference number
ISO 11146-2:2021
© ISO 2025
International Standard
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
Edition 2
2021-07
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Published (Edition 2, 2021)

ISO 11146-2:2021

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Format
CHF 98
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Abstract

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.

General information

  • Status
     : Published
    Publication date
     : 2021-07
    Stage
    : International Standard published [60.60]
  • Edition
     : 2
    Number of pages
     : 16
  • Technical Committee :
    ISO/TC 172/SC 9
    ICS :
    31.260 
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