Enhanced optical absorption in nanopatterned Yb-doped thin films for solid state laser application

Wenda Cui; Weihong Hua; Hongyan Wang; Han Kai; Xiaojun Xu

doi:10.1117/12.2268049

12 May 2017 Enhanced optical absorption in nanopatterned Yb-doped thin films for solid state laser application

Wenda Cui, Weihong Hua, Hongyan Wang, Han Kai, Xiaojun Xu

Proceedings Volume 10173, Fourth International Symposium on Laser Interaction with Matter; 101731L (2017) https://doi.org/10.1117/12.2268049
Event: 4th International Symposium on Laser Interaction with Matter, 2016, Chengdu, China

Abstract

The excitation and emission properties of optical materials can be adjusted by nanostructures and to achieve high optical efficiency in the optically pump laser with short absorption length and high threshold pump power, we present and theoretically investigate a Yb-doped thin film on a 1D grating structure in this paper. High reflectivity at the pump and emission wavelength are realized simultaneously and in terms of the guided-mode resonance theory, the local field of high reflected light is enhanced which will increase the absorption of associated laser wavelength. we analyze parameters of the nanostructure in detail based on rigorous coupled-wave theory and an appropriate structure is decided. We set up a simple quasi-three-level model and demonstrate that this designed structure can effectively improve the optical efficiency of optically pump solid state laser.

Citation Download Citation

Wenda Cui, Weihong Hua, Hongyan Wang, Han Kai, and Xiaojun Xu "Enhanced optical absorption in nanopatterned Yb-doped thin films for solid state laser application", Proc. SPIE 10173, Fourth International Symposium on Laser Interaction with Matter, 101731L (12 May 2017); https://doi.org/10.1117/12.2268049

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