INTERFEROMETRIC INVESTIGATION OF THE WAVEFRONT OF LASER BEAMS
- 1 June 1967
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 10 (11) , 301-303
- https://doi.org/10.1063/1.1754820
Abstract
A simple interferometric technique which uses a diverging spherical comparison wave for study of laser beams is described. The interference pattern resulting from superposition of the primary beam and a small portion of the expanded comparison wavefront provides information about both the phase and some spatial coherence properties of the primary radiation. Expected interference patterns have been obtained for a spatially coherent beam from a He–Ne gas laser. The phase character and spatial coherence features of the beam from a Q‐switched ruby laser have been investigated.Keywords
This publication has 2 references indexed in Scilit:
- Coherence Properties of Optical FieldsReviews of Modern Physics, 1965
- Unstable optical resonators for laser applicationsProceedings of the IEEE, 1965