Bridgman growth of LiYF4 and LiLuF4 crystals for radiation-balanced lasers

Azzurra Volpi; Junwei Meng; Alexander R. Albrecht; Mansoor Sheik-Bahae; Daniel Biner; Karl W Krämer; Markus P. Hehlen

doi:10.1117/12.2510691

1 March 2019 Bridgman growth of YLiF₄ and LuLiF₄ crystals for radiation-balanced lasers

Azzurra Volpi, Junwei Meng, Alexander R. Albrecht, Mansoor Sheik-Bahae, Daniel Biner, Karl W Krämer, Markus P. Hehlen

Author Affiliations +

Proceedings Volume 10936, Photonic Heat Engines: Science and Applications; 109360P (2019) https://doi.org/10.1117/12.2510691
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

Single crystals of LiYF₄ (YLF) and LiLuF₄ (LLF) doped with Yb³⁺, Tm³⁺, or Ho³⁺ are attractive materials for enabling radiation balanced lasers (RBLs) operating in the 1–2 μm wavelength range. High material purity and short growth times are critical for exploring and optimizing the performance of these materials. We show that the Bridgman growth method can yield single crystals within ~1 week and requiring only a few grams of the respective starting materials. We report on progress growing YLF and LLF crystals by the vertical Bridgman method and discuss the challenges posed by the incongruent melting properties of YLF. The congruently-melting LLF is found to be an attractive candidate material for RBL applications.

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Citation Download Citation

Azzurra Volpi, Junwei Meng, Alexander R. Albrecht, Mansoor Sheik-Bahae, Daniel Biner, Karl W Krämer, and Markus P. Hehlen "Bridgman growth of YLiF₄ and LuLiF₄ crystals for radiation-balanced lasers", Proc. SPIE 10936, Photonic Heat Engines: Science and Applications, 109360P (1 March 2019); https://doi.org/10.1117/12.2510691

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