Properties of Pr<sup>3+</sup>∶YLF Red Laser with Weak Blue Absorption Pumping

Zeqian Jiang; Bingxuan Li; Wenbin Liao; Ge Zhang

doi:10.3788/CJL231355

Chinese Journal of Lasers, Volume. 51, Issue 13, 1301003(2024)

Properties of Pr³⁺∶YLF Red Laser with Weak Blue Absorption Pumping

Zeqian Jiang^1,4, Bingxuan Li^1,2,3, Wenbin Liao^1,3, and Ge Zhang^1,2,3、*

Author Affiliations

¹Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, Fujian , China

²Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350108, Fujian , China

³Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, Fujian , China

⁴University of Chinese Academy of Sciences, Beijing 100049,China

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Figures & Tables(11)

Fig. 1. Energy level structure of Pr³⁺∶YLF and level transitions in visible light band

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Fig. 2. Blue light absorption spectrum and pump emission spectrum of Pr³⁺∶YLF

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Fig. 3. Schematic of experimental setup for Pr³⁺∶YLF pumped by blue semiconductor light

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Fig. 4. Transmittance curves of 640 nm red light at different OCs

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Fig. 5. Thermal lens focal length of Pr³⁺∶YLF crystal versus pump power under different coupling ratios

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Fig. 6. Thermal lens focal length of Pr³⁺∶YLF crystal versus pump power under different coupling ratios after thermal stress correction

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Fig. 7. Output characteristic curves of red lasers based on Pr³⁺∶YLF. (a) Coupling ratio of 1∶1; (b) coupling ratio of 1∶2; (c) coupling ratio of 1∶3; (d) spectrum and polarization map of output red laser

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Table 1. Output characteristic parameters of laser under coupling ratio of 1∶1
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Table 1. Output characteristic parameters of laser under coupling ratio of 1∶1
T_oc /% η_Slope /% P_th /W P_opMax /W
0.69 14.9 1.20 1.36
1.27 21.6 1.33 1.91
1.86 22.2 1.33 1.81

Table 2. Output characteristic parameters of laser under coupling ratio of 1∶2
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Table 2. Output characteristic parameters of laser under coupling ratio of 1∶2
T_oc /% η_Slope /% P_th /W P_opMax /W
0.69 21.9 0.42 2.04
1.27 36.8 0.75 2.46
1.86 26.9 1.04 2.35

Table 3. Output characteristic parameters of laser under coupling ratio of 1∶3
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Table 3. Output characteristic parameters of laser under coupling ratio of 1∶3
T_oc /% η_Slope /% P_th /W P_opMax /W
0.69 8.5 1.82 0.72
1.27 15.1 1.92 1.28
1.86 11.5 2.21 0.91

Table 4. Characteristic comparison of Pr³⁺∶YLF red laser
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Table 4. Characteristic comparison of Pr³⁺∶YLF red laser
Pump wavelength /nm η_Slope /% P_th /W Ref.
443.8 33 0.06 ［4］
449.3 36.8 0.75 This work

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Zeqian Jiang, Bingxuan Li, Wenbin Liao, Ge Zhang. Properties of Pr³⁺∶YLF Red Laser with Weak Blue Absorption Pumping[J]. Chinese Journal of Lasers, 2024, 51(13): 1301003

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