PC correction of distortions in a forming telescope with a diffractional optical element
Abstract
It is demonstrated experimentally that compensation can be obtained for the dynamic aberrations of a forming telescope on the main mirror of which a diffractional optical element is deposited in order to inject the reference radiation into the system with PC, and that angular scanning of the output beam is possible without its distortion. A relay located on the path of the reference beam to the PC mirror and a telescope which precludes transmission of the reference beam through a hole in the main mirror made it possible to bring the range of permissible mirror aberrations to about 65 lambda/D and the scanning range to about 44 lambda/D, while retaining the angular divergence of the output beam close to the diffraction limit.
- Publication:
-
Kvantovaia Elektronika Moscow
- Pub Date:
- June 1991
- Bibcode:
- 1991KvanE..18..762A
- Keywords:
-
- Aberration;
- Carbon Dioxide Lasers;
- Light Modulation;
- Mirrors;
- Pulsed Lasers;
- Telescopes;
- Diffraction Paths;
- Laser Beams;
- Laser Pumping;
- Optical Paths;
- Optical Scanners;
- Optics