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Growth, spectroscopy and 2 μm laser operation of monoclinic Tm3+:ZnWO4 crystalстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Zin Elabedine Ghassen, Subbotin Kirill, Loiko Pavel, Pan Zhongben, Eremeev Kirill, Zimina Yulia, Didenko Yana, Pavlov Sergei, Titov Anatoly, Dunina Elena, Fomicheva Liudmila, Kornienko Aleksey, Braud Alain, Solé Rosa Maria, Aguiló Magdalena, Díaz Francesc, Chen Weidong, Volkov Pavel, Petrov Valentin, Mateos Xavier
- Журнал: Optical Materials
- Том: 157
- Год издания: 2024
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Номер статьи: 116039
- DOI: 10.1016/j.optmat.2024.116039
- Аннотация: We report on the crystal growth, polarized spectroscopy, and laser operation of monoclinic Tm3+, Na+(Li+) codoped zinc monotungstate (ZnWO4) crystals. The Li+ codoping with an optimized Tm/Li ratio enables almost complete local charge compensation leading to better crystal quality, higher Tm segregation coefficient, and longer luminescence lifetime and ultimately the demonstration of laser operation. The modified Judd-Ofelt theory was employed to calculate the Tm3+ transition probabilities yielding a radiative lifetime of the 3F4 state of 2.59 ms. The corresponding intensity parameters are Ω2 = 5.194, Ω4 = 0.658, Ω6 = 0.471 [10−20 cm2] and α = 0.110 [10−4 cm]. Tm,Li:ZnWO4 features strongly polarized emission spectra extending beyond 2 μm owing to a large total Stark splitting of the ground-state, ΔE (3H6) = 644 cm−1. The stimulated-emission cross-section in this spectral range reaches 0.47 × 10−20 cm2 at 2015 nm for light polarization E || Np. The continuous-wave Tm,Li:ZnWO4 laser generated 282 mW at 1.98 μm with a slope efficiency of 14.7 %, and laser emission at 2.03 μm was also achieved.
- Добавил в систему: Зимина Юлия Игроевна