| Инд. авторы: | Steinberg I.S., Kirpichnikov A.V., Atuchin V.V. |
| Заглавие: | Two-photon absorption in undoped LiTaO3 crystals |
| Библ. ссылка: | Steinberg I.S., Kirpichnikov A.V., Atuchin V.V. Two-photon absorption in undoped LiTaO3 crystals // Optical Materials. - 2018. - Vol.78. - P.253-258. - ISSN 0925-3467. - EISSN 1873-1252. |
| Внешние системы: | DOI: 10.1016/j.optmat.2017.11.025; WoS: 000430994200031; |
| Реферат: | eng: The two-photon absorption (TPA) coefficient is obtained for pure lithium tantalate (LT) crystals as a function of C-Li = 100% x Li2O/(Li2O + Ta2O5) ratio. Five LT samples with C-Li = 47.95, 48.38, 48.75, 49.6 and 50 mol % were selected. The open Z-scan method was carried out to measure TPA coefficients at lambda = 400 nm using 90 fs pulses at the appropriate pulse intensity of I-0 = 3.5-4 GW/cm(2). The TPA coefficients in LT drastically increase with the Li content increase and they reach 3-4 cm/GW for the stoichiometric composition LiTaO3. TPA exhibits its saturation behavior with the saturation intensity of 11 GW/cm(2). (C) 2017 Published by Elsevier B.V.
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| Ключевые слова: | NIOBATE CRYSTALS; OPTICAL-PROPERTIES; ZERO-BIREFRINGENCE; 3-PHOTON ABSORPTION; NONLINEAR REFRACTION; WAVE-GUIDES; SINGLE-CRYSTALS; LITHIUM TANTALATE CRYSTALS; Z-scan method; Composition; Lithium tantalate; Two-photon absorption; REFRACTIVE-INDEXES; IMPLANTED LINBO3; |
| Издано: | 2018 |
| Физ. характеристика: | с.253-258 |