Optimization of ultrashort pulse written volume Bragg gratings in fused silica for UV applications

Daniel Richter; Malte P. Siems; Thorsten A. Goebel; Ria G. Krämer; Stefan Nolte

doi:10.1117/12.2649973

17 March 2023 Optimization of ultrashort pulse written volume Bragg gratings in fused silica for UV applications

Daniel Richter, Malte P. Siems, Thorsten A. Goebel, Ria G. Krämer, Stefan Nolte

Proceedings Volume PC12402, Components and Packaging for Laser Systems IX; PC124020B (2023) https://doi.org/10.1117/12.2649973
Event: SPIE LASE, 2023, San Francisco, California, United States

Abstract

We report on the optimization of ultrashort pulse laser written VBGs for UV applications. The VBGs are directly inscribed in fused silica by applying ultrashort laser pulses and the phase mask scanning technique and exhibit geometries and reflectivities comparable to conventional gratings. For applications below 300nm, absorption in the VBG is a critical issue. Therefore, we investigate the influence of absorption on writing parameters and thermal annealing. The optimized gratings in fused silica show a significantly reduced residual absorption, making these optimized gratings well suited for low wavelength applications especially in the Near-UV and below.

Conference Presentation

Citation Download Citation

Daniel Richter, Malte P. Siems, Thorsten A. Goebel, Ria G. Krämer, and Stefan Nolte "Optimization of ultrashort pulse written volume Bragg gratings in fused silica for UV applications", Proc. SPIE PC12402, Components and Packaging for Laser Systems IX, PC124020B (17 March 2023); https://doi.org/10.1117/12.2649973

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