Abstract

A double-pass negative-branch hybrid resonator is applied to a $10\mathrm{kW}$ chemical oxygen iodine laser. The resonator is folded in such a way that the dimension of the stable direction is reduced. The intensity distributions of the near and far fields of the laser beam and the sensitivity against tilts of the output mirror are investigated. A comparison between theory and experiment is performed. It is shown that the folded hybrid resonator provides a better beam quality and therefore a higher power density in the far field than a single-pass hybrid resonator. The sensitivity against tilts of the resonator mirrors in the stable direction is reduced.

© 2008 Optical Society of America

Chemical oxygen-iodine laser power generation with an off-axis hybrid resonator

Jürgen Handke, Wolfgang O. Schall, Thomas Hall, Frank Duschek, and Karin M. Grünewald
Appl. Opt. 45(16) 3831-3838 (2006)

Analysis of lasing in chemical oxygen-iodine lasers with unstable resonators using a geometric-optics model

Boris D. Barmashenko
Appl. Opt. 48(13) 2542-2550 (2009)

Experimental investigation of an unstable ring resonator with 90-deg beam rotation for a chemical oxygen iodine laser

Yuqi Jin, Bailing Yang, Fengting Sang, Dazheng Zhou, Liping Duo, and Qi Zhuang
Appl. Opt. 38(15) 3249-3252 (1999)

COIL emission of a modified negative branch confocal unstable resonator

Carsten Pargmann, Thomas Hall, Frank Duschek, Karin Maria Grünewald, and Jürgen Handke
Appl. Opt. 46(31) 7751-7756 (2007)

Off-axis negative-branch unstable resonator in rectangular geometry

Carsten Pargmann, Thomas Hall, Frank Duschek, Karin Maria Grünewald, and Jürgen Handke
Appl. Opt. 50(1) 11-16 (2011)