Resonators for high brightness COIL

Karin M. Gruenewald

doi:10.1117/12.740579

12 April 2007 Resonators for high brightness COIL

Karin M. Gruenewald

Proceedings Volume 6611, Laser Optics 2006: High-Power Gas Lasers; 661106 (2007) https://doi.org/10.1117/12.740579
Event: Laser Optics 2006, 2006, St. Petersburg, Russian Federation

Abstract

High brightness performance of chemical oxygen iodine lasers (COIL) requires resonator concepts that enable efficient power extraction from low gain medium while the beam quality is close to the diffraction limit. The resonator shall provide straightforward alignment procedures and stable output performance for efficient laser operation. Such resonator configurations are theoretically designed and implemented in a 10 kW-class COIL. Different resonator concepts are pre-evaluated by numerical methods with regard to their design and alignment sensitivities. Promising candidates are tested for their alignment performance and brightness parameters. Among others, hybrid resonators are found to be of straightforward optical architecture meeting the above challenges. Theoretical predictions and experimental results are in excellent agreement. Therefore, further promising design approaches, like multi-pass hybrid resonators or the modified negative-branch unstable resonator, will be depicted and discussed within this paper.

Citation Download Citation

Karin M. Gruenewald "Resonators for high brightness COIL", Proc. SPIE 6611, Laser Optics 2006: High-Power Gas Lasers, 661106 (12 April 2007); https://doi.org/10.1117/12.740579

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