Designation of a polarization-converting system and its enhancement of double-frequency efficiency

Peng Wang; Xiao Li; YaPing Shang; XiaoJun Xu

doi:10.1117/12.2193143

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5 August 2015 Designation of a polarization-converting system and its enhancement of double-frequency efficiency

Peng Wang, Xiao Li, YaPing Shang, XiaoJun Xu

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Proceedings Volume 9621, 2015 International Conference on Optical Instruments and Technology: Advanced Lasers and Applications; 96210V (2015) https://doi.org/10.1117/12.2193143
Event: International Conference on Optical Instruments and Technology 2015, 2015, Beijing, China

Abstract

A polarization-converting system is designed by using axicons and wave plate transforming naturally polarized laser to linearly polarized laser at real time to resolve difficulties of generating high-power linearly polarized laser. The energy conversion efficiency reaches 96.9% with an enhancement of extinction ratio from 29.7% to 98%. The system also keeps excellent far field divergence. In the one-way SHG experiment the double frequency efficiency reached 4.32% using the generated linearly polarized laser, much higher than that of the naturally polarized laser but lower than that of the linearly polarized laser from PBS. And the phenomenon of the SHG experiment satisfies the principle of phase matching. The experiment proves that this polarization-converting system will not affect laser structure which controls easily and needs no feedback and controlling system with stable and reliable properties at the same time. It can absolutely be applied to the polarization-conversion of high power laser and enhance the SHG efficiency and the energy efficiency.

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Peng Wang, Xiao Li, YaPing Shang, and XiaoJun Xu "Designation of a polarization-converting system and its enhancement of double-frequency efficiency", Proc. SPIE 9621, 2015 International Conference on Optical Instruments and Technology: Advanced Lasers and Applications, 96210V (5 August 2015); https://doi.org/10.1117/12.2193143

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