This article is cited in 2 papers

Precision optical measurements and metrology

The effect of a limited aperture of the emitter on the characteristics of the width and angle of divergence of the laser beam

A. M. Raitsin

All-Russian Research Institute for Optical and Physical Measurements, 119361, Moscow, Russia

Abstract: The necessary conditions for the correct measurement of the width and angle of divergence of the laser beam are determined taking into account the finite dimensions of the aperture of the emitter by a method based on the determination of initial spatial moments. It is shown that in this case stringent conditions are imposed on the shape of the spatial intensity distribution in the cross section of the laser beam, which were not taken into account in the corresponding developed standards.

Keywords: width, diameter, divergence, distribution coefficient, spatial distribution of laser beam intensity.

Received: 30.04.2019
Revised: 05.07.2019
Accepted: 10.07.2019

DOI: 10.21883/OS.2019.11.48527.149-19

 English version: Optics and Spectroscopy, 2019, 127:5, 924–930

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