Off-Axis Folded Laser Beam Trajectories In A Strip-Line CO[sub]2[/sub] Laser

Baruch Sterman; Amnon Gabay; Shaul Yatsiv; Eldad Dagan

doi:10.1117/12.951092

5 July 1989 Off-Axis Folded Laser Beam Trajectories In A Strip-Line CO₂ Laser

Baruch Sterman, Amnon Gabay, Shaul Yatsiv, Eldad Dagan

Proceedings Volume 1038, 6th Mtg in Israel on Optical Engineering; (1989) https://doi.org/10.1117/12.951092
Event: Sixth Meeting of Optical Engineering in Israel, 1988, Tel Aviv, Israel

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.

Citation Download Citation

Baruch Sterman, Amnon Gabay, Shaul Yatsiv, and Eldad Dagan "Off-Axis Folded Laser Beam Trajectories In A Strip-Line CO₂ Laser", Proc. SPIE 1038, 6th Mtg in Israel on Optical Engineering, (5 July 1989); https://doi.org/10.1117/12.951092

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