Birefringent elements based on femtosecond laser-induced nanogratings

Lourdes Patricia R. Ramirez; Matthias Heinrich; Sören Richter; Felix Dreisow; Robert Keil; Alexander V. Korovin; Ulf Peschel; Stefan Nolte; Andreas Tünnermann

doi:10.1117/12.843533

25 February 2010 Birefringent elements based on femtosecond laser-induced nanogratings

Lourdes Patricia R. Ramirez, Matthias Heinrich, Sören Richter, Felix Dreisow, Robert Keil, Alexander V. Korovin, Ulf Peschel, Stefan Nolte, Andreas Tünnermann

Author Affiliations +

Proceedings Volume 7589, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications X; 758919 (2010) https://doi.org/10.1117/12.843533
Event: SPIE LASE, 2010, San Francisco, California, United States

Abstract

We report on the fabrication of birefringent optical components based on so-called nanogratings. These selforganized nanostructures with sub-wavelength periodicity are formed during femtosecond laser processing of transparent materials, resulting in characteristic birefringent modifications. Nanogratings provide the means for the direct inscription of customized birefringent elements with position-dependent retardation. We present our investigations on the formation process of nanogratings in fused silica and the influence of fabrication parameters, thereby identifying ways to systematically control the structural properties of the gratings. Consequently, we were able to fabricate nanograting-based birefringent elements with specific retardations in bulk fused silica.

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Lourdes Patricia R. Ramirez, Matthias Heinrich, Sören Richter, Felix Dreisow, Robert Keil, Alexander V. Korovin, Ulf Peschel, Stefan Nolte, and Andreas Tünnermann "Birefringent elements based on femtosecond laser-induced nanogratings", Proc. SPIE 7589, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications X, 758919 (25 February 2010); https://doi.org/10.1117/12.843533

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