Polarization beam shaping by ultrafast laser nanostructuring of glass for high power laser applications

Peter G. Kazansky; Sergei Shevtsov; Huijun Wang

doi:10.1117/12.3036581

18 December 2024 Polarization beam shaping by ultrafast laser nanostructuring of glass for high power laser applications

Peter G. Kazansky, Sergei Shevtsov, Huijun Wang

Author Affiliations +

Proceedings Volume PC13190, Laser-Induced Damage in Optical Materials 2024; PC131900M (2024) https://doi.org/10.1117/12.3036581
Event: SPIE Laser Damage, 2024, San Ramon, CA, United States

Abstract

Twenty-five years after the discovery of anisotropic nanostructures in silica glass created by laser writing with polarized ultrashort light pulses, the physics and applications of the resultant form birefringence remain a significant area of interest. By controlling the polarization azimuth, it is possible to directly write flat optical elements with spatially varying birefringence, utilizing the geometrical or Pancharatnam-Berry phase. This technology is particularly applied in S-waveplates for polarization beam shaping, with applications ranging from material processing to optical trapping and generating extreme UV vector beams. More recent developments have led to ultralow-loss birefringent optical elements such as UV retarders, geometrical phase lenses, and prisms, created using a novel anisotropic nanoporous modification in silica glass, known as Type X. These elements demonstrate high transmission in the UV range and damage thresholds comparable to pristine silica glass, making them particularly valuable for polarization control in high-power laser applications.

Conference Presentation

Citation Download Citation

Peter G. Kazansky, Sergei Shevtsov, and Huijun Wang "Polarization beam shaping by ultrafast laser nanostructuring of glass for high power laser applications", Proc. SPIE PC13190, Laser-Induced Damage in Optical Materials 2024, PC131900M (18 December 2024); https://doi.org/10.1117/12.3036581

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