Brief Communications

Measurement of the radius of curvature of a laser beam by an interferometric method

A. I. Barchukov, A. A. Lyubin, V. S. Terin


Abstract: An interferometric method is developed for the measurement of the radius of curvature of a laser beam, particularly that emitted by a CO₂ laser. The principal calculation equations are derived. Working graphs are plotted for the determination of the radius of curvature of the phase front and for the distribution of the field phase across the beam.

UDC: 621.372.2

PACS: 42.55.Lt, 42.60.Jf, 07.60.Ly, 06.30.Bp

Received: 12.10.1971
Revised: 17.03.1972

 English version: Soviet Journal of Quantum Electronics, 1973, 2:4, 374–375