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2 December 2022 Evaluating the potential of plasmonic thin films for high laser power beam manipulation
Thejaswi U. Tumkur Umanath, Ruzan Sokhoyan, Magel P. Su, Ghazaleh K. Shirmanesh, Yonghwi Kim, Harry A. Atwater, Eyal Feigenbaum, Selim Elhadj
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Proceedings Volume PC12300, Laser-Induced Damage in Optical Materials 2022; PC123000A (2022) https://doi.org/10.1117/12.2641540
Event: SPIE Laser Damage, 2022, Rochester, New York, United States
Abstract
We investigate the pulsed laser-induced damage performance and optoelectronic properties (at wavelength ~ 1 µm) of model nanophotonic thin films including gold, indium tin oxide, and alternative refractory materials such as titanium nitride and titanium oxynitride. We find that gold exhibits the best laser damage resistance compared to other plasmonic films of comparable thicknesses. We show that large absorption losses arising from high carrier concentrations and low mobilities in alternative plasmonic thin films, lead to exacerbated degradation and poorer laser damage performance. We will also present advanced strategies for engineering damage resistance and optical performance of nanophotonic thin films for high laser power applications. This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. LLNL-ABS-XXXXXX. LLNL-ABS-834545
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Thejaswi U. Tumkur Umanath, Ruzan Sokhoyan, Magel P. Su, Ghazaleh K. Shirmanesh, Yonghwi Kim, Harry A. Atwater, Eyal Feigenbaum, and Selim Elhadj "Evaluating the potential of plasmonic thin films for high laser power beam manipulation", Proc. SPIE PC12300, Laser-Induced Damage in Optical Materials 2022, PC123000A (2 December 2022); https://doi.org/10.1117/12.2641540
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KEYWORDS
Thin films
Plasmonics
Laser induced damage
Tin
Gold
Nanophotonics
Optics manufacturing
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