Research on power spectral density after nonlinear propagation in high-power solid state laser

Wan-Qing Huang; Ying Zhang; Wen-Yi Wang; Yuan-Chao Geng; Lan-Qin Liu

doi:10.1117/12.2064414

3 February 2015 Research on power spectral density after nonlinear propagation in high-power solid state laser

Wan-Qing Huang, Ying Zhang, Wen-Yi Wang, Yuan-Chao Geng, Lan-Qin Liu

Proceedings Volume 9255, XX International Symposium on High-Power Laser Systems and Applications 2014; 92551F (2015) https://doi.org/10.1117/12.2064414
Event: XX International Symposium on High Power Laser Systems and Applications, 2014, Chengdu, China

Abstract

The Power Spectral Density (PSD) is the specification of mid-spatial-frequency phase error in high power solid-state laser facilities. Its evolution during propagation and connection with laser performance have not been fully discussed due to the complexity of nonlinear propagation. We present in this paper the analytic forms of PSD of output phase and intensity modulation, which could be obtained from the input phase PSD introduced by imperfect optics. Moreover, we connect the PSD with the important laser performance parameters: the relative intensity of wings on the focal spot and the contrast ratio of the near-field.

Citation Download Citation

Wan-Qing Huang, Ying Zhang, Wen-Yi Wang, Yuan-Chao Geng, and Lan-Qin Liu "Research on power spectral density after nonlinear propagation in high-power solid state laser", Proc. SPIE 9255, XX International Symposium on High-Power Laser Systems and Applications 2014, 92551F (3 February 2015); https://doi.org/10.1117/12.2064414

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