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Proceedings Paper

Optical anisotropic coatings for polarization control in high-power lasers
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Paper Abstract

In this work, a novel multi-layer approach of high band-gap birefringent columnar coatings was proposed and investigated. The growth of anisotropic columnar nano-structures with elliptical shape cross-section was initiated by self-shadowing effect, which was induced by placing the substrate at oblique angle during the deposition process. Amorphous silica was deposited in so-called serial bi-deposition manner to form anisotropic films with high thickness uniformity. The combination of birefringent nano-structured and isotropic layers allows to form zero-order wave-plates with desirable phase delay difference (as an example, λ/4). Low optical losses and high transparency (T~99%) are demonstrated while indicating the potential to withstand laser fluences of 40 J/cm2 and 15 J/cm2 in nanosecond regime at 355 nm and 266 nm wavelengths, respectively.

Paper Details

Date Published: 26 April 2019
PDF: 6 pages
Proc. SPIE 11033, High-Power, High-Energy, and High-Intensity Laser Technology IV, 110330O (26 April 2019); doi: 10.1117/12.2522509
Show Author Affiliations
Lina Grineviciute, State research institute Ctr. for Physical Sciences and Technology (Lithuania)
Karolis Gricius, State research institute Ctr. for Physical Sciences and Technology (Lithuania)
Rytis Buzelis, State research institute Ctr. for Physical Sciences and Technology (Lithuania)
Tomas Tolenis, State research institute Ctr. for Physical Sciences and Technology (Lithuania)


Published in SPIE Proceedings Vol. 11033:
High-Power, High-Energy, and High-Intensity Laser Technology IV
Joachim Hein; Thomas J. Butcher, Editor(s)

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