Optical spectroscopy and energy transfer in Tm3+ - Ho3+ ions system in LiY0.3Lu0.7F4 mixed crystals

被引：0
作者：
Minnebaev, T. M. [1 ]
Shavelev, A. A. [1 ]
Shakirov, A. A. [1 ]
Astrakhantseva, A. V. [1 ]
Pudovkin, M. S. [1 ]
Nizamutdinov, A. S. [1 ]
Semashko, V. V. [1 ,2 ]
机构：
[1] Kazan Fed Univ, Kazan 420008, Russia
[2] Kazan Sci Ctr RAS, Kazan, Russia
来源：
OPTICAL MATERIALS | 2024年 / 156卷
关键词：
TEMPERATURE-DEPENDENCE; LASER; LUMINESCENCE; PARAMETERS; MANIFOLDS;
D O I：
10.1016/j.optmat.2024.116025
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Here we present the study of spectral and kinetic characteristics of Tm3+ and Ho3+ ions system in LiY0.3Lu0.7F4 mixed crystal. Polarized spectra of absorption and luminescence transitions between F-3(4) - H-3(6) and I-5(7) - I-5(8) states of Tm3+ and Ho3+ ions respectively as well as energy transfer efficiency were investigated. It was shown that LiY0.3Lu0.7F4 mixed crystal provides some broadening of Tm3+ and Ho3+ spectral lines for 4f-4f intermultiplet transitions. The evaluated F & ouml;rster energy transfer critical radius for LiY0.3Lu0.7F4: Tm3++Ho3+ (10 at. % + 2 at. %) crystal was 22 & Aring;. The backtransfer efficiency from Ho3+ to Tm3+ in the described energy transfer process CHo-Tm results in value of 0.83 x 10(-40) cm(6)/s and relation of froward and back-transfer coefficients CTm-Ho/CHo-Tm appears to be 6.8 calculated from our spectroscopic data, which make it prospective active medium for sensitized laser oscillation in IR spectral region.
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页数：6
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