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Proceedings Paper

Off-Axis Folded Laser Beam Trajectories In A Strip-Line CO[sub]2[/sub] Laser
Author(s): Baruch Sterman; Amnon Gabay; Shaul Yatsiv; Eldad Dagan
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Paper Abstract

For a hemi-confocal cavity of high Fresnel number, the conventional Hermite-Gaussian axial mode theory no longer adequately predicts the output intensity pattern. Under these conditions, off-axis beam trajectories can have higher round trip gains, and may therefore be dominant. Specific trajectories can be selected by introducing suitable blocks into the cavity. Output patterns corresponding to M shaped modes were observed experimentally in a cavity with a stop placed at the center of the full reflecting spherical mirror. A Fox and Li resonator analysis algorithm was applied to the above cavity configuration and a similar output distribution was obtained. Therefore, the general spatial properties of the M mode are determined by diffraction.

Paper Details

Date Published: 5 July 1989
PDF: 9 pages
Proc. SPIE 1038, 6th Mtg in Israel on Optical Engineering, (5 July 1989); doi: 10.1117/12.951092
Show Author Affiliations
Baruch Sterman, The Hebrew University (Israel)
Amnon Gabay, The Hebrew University (Israel)
Shaul Yatsiv, The Hebrew University (Israel)
Eldad Dagan, The Hebrew University (Israel)


Published in SPIE Proceedings Vol. 1038:
6th Mtg in Israel on Optical Engineering
Rami Finkler; Joseph Shamir, Editor(s)

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