Spectra and intensity parameters of Tm ion in YAlO3 crystal |
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| Authors: | Yanling Lu Jun Wang Anping Dong Baode Sun |
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| Institution: | a State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200030, PR China
b Department of Physics, Shanghai Jiao Tong University, Shanghai 200030, PR China |
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| Abstract: | High quality Tm-doped YAlO3 (Tm:YAlO3) single crystals were obtained along crystallographic b-axis by the Czochralski technique. Optical absorption and fluorescence spectra for Tm3+ in YAlO3 crystals were investigated at room temperature. Based on Judd-Ofelt approach, the intensity parameters Ωt (t = 2, 4, 6) of Tm:YAlO3 were calculated to be Ω2 = 0.93 × 10−20 cm2, Ω4 = 2.23 × 10−20 cm2, and Ω6 = 1.12 × 10−20 cm2. The spectral parameters such as experimental and theoretical oscillator strengths, radiative transition probabilities, radiative lifetime and the fluorescence branching ratio were also obtained. All results indicate that Tm:YAlO3 is a potential candidate for compact, efficient mid-infrared lasers with laser diode pumping. |
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| Keywords: | Tm:YAlO3 crystal Spectral properties Judd-Ofelt approach |
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