Mode aberration analysis of positive-branch confocal unstable resonators by use of wavefront reconstruction

Xiang Zhang; Xin Chen

doi:10.1117/12.870315

21 July 2010 Mode aberration analysis of positive-branch confocal unstable resonators by use of wavefront reconstruction

Xiang Zhang, Xin Chen

Author Affiliations +

Proceedings Volume 7749, 2010 International Conference on Display and Photonics; 774903 (2010) https://doi.org/10.1117/12.870315
Event: 2010 International Conference on Display and Photonics, 2010, Nanjing, China

Abstract

The effect of intracavity aberrated perturbation on output mode structure properties of passive confocal unstable resonator is been experimentally researched by adopting Hartmann-Shack wavefront sensor and Zernike modal wavefront reconstruction on the basis of numerical simulation. Results show that intracavity perturbation such as mirror tilt and misadjustment in the vertical axis notablely affects outcoupled mode properties, and will also increase some high-order aberrations of beam phase properties. However, low-order Zernike tilt aberration is the main component when phase-tilted perturbation is introduced into the resonator. Defocus (Z₃), astigmatism (Z₄ or Z₅) and coma aberration (Z₆ or Z₇) will all be brought, and also such high-order aberration included in wavefront will directly degrade output beam quality for larger Fresnel number unstable resonators. When wavefront corrector is used for intracavity aberrated compensation, low-order aberration should be considered preferentially.

Citation Download Citation

Xiang Zhang and Xin Chen "Mode aberration analysis of positive-branch confocal unstable resonators by use of wavefront reconstruction", Proc. SPIE 7749, 2010 International Conference on Display and Photonics, 774903 (21 July 2010); https://doi.org/10.1117/12.870315

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