Growth, spectroscopy and high-power laser operation of Er:YAP crystal with different Er3+ concentrations

被引：10
|
作者：
Quan, Cong [1 ,2 ,3 ]
Sun, Dunlu [1 ,2 ,3 ]
Zhang, Huili [1 ,2 ,3 ]
Luo, Jianqiao [1 ,2 ,3 ]
Hu, Lunzhen [1 ,4 ]
Han, Zhiyuan [1 ,4 ]
Qiao, Yang [1 ,4 ]
Dong, Kunpeng [1 ,4 ]
Chen, Yuwei [1 ,4 ]
Cheng, Maojie [1 ,4 ]
机构：
[1] Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei Inst Phys Sci, Crystal Lab Laser Technol Res Ctr, Hefei 230031, Peoples R China
[2] Adv Laser Technol Lab Anhui Prov, Hefei 230037, Peoples R China
[3] Key Lab Photon Devices & Mat, Hefei 230031, Anhui, Peoples R China
[4] Univ Sci & Technol China, Hefei 230026, Peoples R China
来源：
JOURNAL OF LUMINESCENCE | 2022年 / 251卷
基金：
中国国家自然科学基金;
关键词：
Er:YAP crystal; XRCs; Spectroscopy; LD side-Pumping; High power and high-frequency mid-infrared laser; CONTINUOUS-WAVE;
D O I：
10.1016/j.jlumin.2022.119122
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Er3+-doped YAP crystals with concentrations of 5 at%, 10 at%, 15 at% and 20 at% were grown successfully by Czochralski method. X-ray rocking curves suggest high crystalline quality. Lifetime ratio of I-4(13/2) and I-4(11/2) levels decreases obviously with the increase of Er3+ concentrations, which is beneficial to realize population inversion and decrease the laser threshold. Spectroscopy and laser show the 15 at% Er:YAP crystal has strongest mid -infrared fluorescence intensity and best laser performance by 968-nm LD side-pumping. Maximum average powers of 23.52 and 11.08 W are achieved at 250 and 1000 Hz, corresponding to the slope efficiency of 12.0% and 6.2%, respectively. Therefore, the 15 at% Er:YAP crystal is a promising candidate for the high-power and high-frequency mid-infrared laser.
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页数：7
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