Lasery a laserová zařízení - Zkušební metody pro šířky, úhly divergence a poměry šíření laserového svazku - Část 2: Hlavní astigmatické svazky (Norma k přímému použití jako ČSN).
NORMA vydána dne 1.1.2022
Designation standards: ČSN EN ISO 11146-2
Classification mark: 192017
Catalog number: 513270
Publication date standards: 1.1.2022
The number of pages: 32
Approximate weight : 96 g (0.21 lbs)
Country: Czech technical standard
Kategorie: Technické normy ČSN
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