1. Ho:CaYAlO4 shaped crystal fibers grown by the micro-pulling-down method and optical properties.
- Author
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Chen, Peng, Liu, Jian, Xu, Jie, Guo, Jun, Zhang, Zhiheng, Li, Dongzhen, Liu, Peng, Wang, Xiaodan, Xu, Xiaodong, Xu, Jun, and Lebbou, Kheirreddine
- Subjects
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CRYSTAL whiskers , *OPTICAL properties , *MID-infrared lasers , *ACTIVE medium , *ULTRA-short pulsed lasers , *TUNABLE lasers - Abstract
Ho3+-doped CaYAlO 4 (Ho:CALYO) crystal fibers have been successfully grown from the melt by the micro-pulling-down (μ -PD) technique for the first time. The polarized absorption spectra, fluorescence spectra and lifetime decay curves were measured at room temperature. The most intense emission of 2 at.% Ho:CALYO crystal fiber appears at 2072 nm with the full width at half maximum (FWHM) of 181.1 nm for σ polarization and at 2022 nm with FWHM of 199.4 nm for π polarization, respectively. The decay lifetimes of 5I 7 state of Ho:CALYO crystal fibers with different holmium concentration were calculated. All the results show that Ho:CALYO crystal fiber has potential as a laser gain medium for ultrashort and tunable Mid-infrared laser system. • Ho:CaYAlO 4 shaped crystal fibers with different Ho3+ concentration were grown using by the micro-pulling-down method. • The effect of Ho3+ concentration on the spectroscopic properties of Ho:CaYAlO 4 crystal fibers was studied. • Ho:CaYAlO 4 crystal fibers have large FWHMs of fluorescence spectra, which is better for tunable and short pulse laser output. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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