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sklademVydáno: 2021-07-21
BS EN ISO 11146-2:2021
Lasers and laser-related equipment. Test methods for laser beam widths, divergence angles and beam propagation ratios General astigmatic beams
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| Označení normy: | BS EN ISO 11146-2:2021 |
| Počet stran: | 26 |
| Vydáno: | 2021-07-21 |
| ISBN: | 978 0 539 03813 2 |
| Status: | Standard |
DESCRIPTION
BS EN ISO 11146-2:2021
This standard BS EN ISO 11146-2:2021 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.