Bragg diffraction gratings formed in bulk fused silica by femtosecond Bessel beams
1 Altechna R&D, Konstitucijos ave ave.23C-504, LT-08105, Vilnius, Lithuania
2 Laser Reseach Center, Physics Faculty, Department of Quantum Electronics, Vilnius University Sauletekio ave.10, LT-10223, Vilnius, Lithuania
3 Centre for Micro-Photonics, Faculty of Engineering and Industrial Sciences,Swinburne University of Technology, Hawthorn, VIC, 3122, Australia
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A femtosecond direct-write method using Bessel beams is investigated as a means for in-bulk diffractive element formation, the performance of the formed diffractive elements is analyzed with insights into possible mechanisms of fused silica modification using Bessel beams. Results are compared to direct-write using Gaussian beams for elements of similar geometry.
© Owned by the authors, published by EDP Sciences, 2013
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