Experimental and numerical study of LIDT pulse temporal scaling for anti-reflective coated LBO crystals

Erikas Atkocaitis; Linas Smalakys; Andrius Melninkaitis

doi:10.1117/12.2641220

2 December 2022 Experimental and numerical study of LIDT pulse temporal scaling for anti-reflective coated LBO crystals

Erikas Atkocaitis, Linas Smalakys, Andrius Melninkaitis

Proceedings Volume PC12300, Laser-Induced Damage in Optical Materials 2022; PC123000I (2022) https://doi.org/10.1117/12.2641220
Event: SPIE Laser Damage, 2022, Rochester, New York, United States

Abstract

Anti-reflective (AR) coatings are frequently used for imaging and laser-related applications, however, their highest possible output power is limited by laser-induced damage threshold (LIDT). LIDT data for AR-coated nonlinear crystals is very limited, especially when it comes to pulse temporal scaling laws. Therefore, we investigated four identical lithium triobate (LBO) crystals deposited with the AR@1064+532 nm coating on one side and the AR@355 nm coating on the opposite side. Numerous tests were conducted following 1-on-1 and S-on-1 testing protocols at UV as well as IR wavelengths in the pulse duration range of 50 fs - 9 ns. To interpret experimental findings, we analyze empirical pulse temporal scaling laws of LIDT for distinct failure modes. Furthermore, we also considered numerical analysis based on rate equations.

Conference Presentation

Citation Download Citation

Erikas Atkocaitis, Linas Smalakys, and Andrius Melninkaitis "Experimental and numerical study of LIDT pulse temporal scaling for anti-reflective coated LBO crystals", Proc. SPIE PC12300, Laser-Induced Damage in Optical Materials 2022, PC123000I (2 December 2022); https://doi.org/10.1117/12.2641220

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