LixAg1–xGaSe2: Interplay Between Lithium and Silver in Mid-Infrared Nonlinear Optical Chalcogenides : научное издание

Isaenko L.; Dong Linfeng; Kurus A.; Lin Zheshuai; Yelisseyev A.; Lobanov S.; Molokeev M.; Korzhneva K.; Goloshumova A.

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Библиографическое описание: LixAg1–xGaSe2: Interplay Between Lithium and Silver in Mid-Infrared Nonlinear Optical Chalcogenides : научное издание / L. Isaenko [et al.]. - Текст : непосредственный // Advanced Optical Materials. - 2022. - Т. 10, № 24. - ISSN 2195-1071, DOI 10.1002/adom.202201727.

Аннотация: AbstractAgGaSe2 and LiGaSe2 are two famous mid-infrared nonlinear optical (NLO) materials with similar chemical formula but different structural symmetry. The former material has relatively larger NLO effect and birefringence but rather small energy band gap, while the latter is the opposite. Aiming at achieving a good balance of NLO properties, here the substitution between silver and lithium ions on the evolution of structural and optical properties in a new series of LixAg1–xGaSe2 crystals is systematically investigated. It reveals that, with the increase of Li content, LixAg1–xGaSe2 almost keeps the same tetragonal symmetry with AgGaSe2 until x ≈ 0.9. The NLO effects and birefringence values vary with respect to x with the largest variation at x = 0.8–0.9. The optimal combination of birefringence (0.03–0.025) and nonlinear parameters (26–30 pm V−1) is achieved at x = 0.4–0.5. As the energy band gap increases with the increase of x, the maximal value of 2.2 eV for chalcopyrite structure suggests that the laser-induced damage threshold of LixAg1–xGaSe2 would be as large as five-fold of AgGaSe2. This study provides a good example to show that the rational substitution between Li and Ag can significantly improve the balance of NLO properties in chalcogenides.

Год издания: 2022

Авторы: Isaenko L. , Dong Linfeng , Kurus A. , Lin Zheshuai , Yelisseyev A. , Lobanov S. , Molokeev M. , Korzhneva K. , Goloshumova A.

Источник: Advanced Optical Materials

Выпуск: Т. 10, № 24

Держатель оригинала документа: Functional Crystal Lab Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 China, L.V. Kirensky Institute of Physics SB RAS Krasnoyarsk 660036 Russia, Novosibirsk State University Novosibirsk 630090 Russia, Siberian Federal University Krasnoyarsk 660041 Russia, University of Chinese Academy of Sciences Beijing 100049 China, V.S. Sobolev Institute of Geology and Mineralogy Siberian Branch of Russian Academy of Sciences Novosibirsk 630090 Russia

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LixAg1–xGaSe2: Interplay Between Lithium and Silver in Mid-Infrared Nonlinear Optical Chalcogenides : научное издание
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