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Homepage>BS Standards>31 ELECTRONICS>31.260 Optoelectronics. Laser equipment>20/30390868 DC BS ENISO 11146-2. Lasers and laser-related equipment. Test methods for laser beam widths, divergence angles and beam propagation ratios Part 2. General astigmatic beams
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immediate downloadReleased: 2020-05-01

20/30390868 DC

BS ENISO 11146-2. Lasers and laser-related equipment. Test methods for laser beam widths, divergence angles and beam propagation ratios Part 2. General astigmatic beams

CURRENCY
LANGUAGE
English
Standard number:20/30390868 DC
Pages:23
Released:2020-05-01
Status:Draft for Comment
DESCRIPTION
This standard 20/30390868 DC BS ENISO 11146-2. Lasers and laser-related equipment. Test methods for laser beam widths, divergence angles and beam propagation ratios is classified in these ICS categories:
  • 31.260 Optoelectronics. Laser equipment

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.


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