Chinese Journal of Lasers, Volume. 50, Issue 7, 0701006(2023)
3‑
Figures & Tables(7)
Fig. 2. Simulation results of pump light after passing shaping system. (a) Schematic of Zemax light tracing; (b) pump light distribution at beam waist
Fig. 4. Schematic of experimental devices for cyclic Er∶YAG laser at room temperature
Fig. 5. Emission spectra of cyclic Er∶YAG lasers at room temperature.（a）Er atomic fraction is 7.5%；（b）Er atomic fraction is 10%；（c）Er atomic fraction is 15%；（d）Er atomic fraction is 25%
Fig. 6. Measured output energy of 2937 nm laser versus absorbed pump energy.（a）Er atomic fraction is 7.5%；（b）Er atomic fraction is 10%；（c）Er atomic fraction is 15%；（d）Er atomic fraction is 25%
Table 1. Experimental data of Er∶YAG crystals with different crystal lengths for each doping concentration
View tableTable 1. Experimental data of Er∶YAG crystals with different crystal lengths for each doping concentration
Parameter Atomic fraction is 7.5% Atomic fraction is 10% Atomic fraction is 15% Atomic fraction is 25% Crystal length of 10 mm Crystal length of
2 mm
Crystal length of 10 mm Crystal length of
2 mm
Crystal length of 10 mm Crystal length of
2 mm
Crystal length of
5 mm
Crystal length of
2 mm
Threshold /mJ 30.1 16.6 23.4 11.4 31.2 11.2 23.8 11.6 Slope efficiency /% 9.6 17.9 23.5 36.5 15.7 30.7 21.9 37.2
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Ye Tian, Sibo Wang, Bo Qu, Zhanda Zhu, Yongling Hui, Hong Lei, Qiang Li. 3‑
Paper Information
Category: laser devices and laser physics
Received: Jun. 23, 2022
Accepted: Aug. 10, 2022
Published Online: Mar. 6, 2023
The Author Email: Lei Hong (ncltlq@bjut.edu.cn), Li Qiang (leihong@bjut.edu.cn)
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