Low-threshold yellow light solid laser based on energy transfer

A solid-state laser and energy transfer technology, which is applied in the direction of active dielectric materials, can solve the problems of low laser output power and inability to meet the needs of practical applications, and achieve the effects of high-efficiency yellow laser output, stable crystal lattice, and improved energy level loss

Pending Publication Date: 2022-08-02
XUZHOU NORMAL UNIVERSITY
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Problems solved by technology

[0004] Literature (Ju Qiaojun, Shen Hua, Yao Wenming, Chen Jiansheng, Tan Huiming, Liu Wenpeng, Luo Jianqiao, Zhang Qingli, Gao Jing. Semiconductor laser pumped Dy:YAG yellow laser[J]. China Laser, 2017,44(04):23- 28.) reported using Dy:YAG to realize semiconductor direct pumping yellow laser output, but the obtained laser output power is low, which cannot meet the actual application requirements

Method used

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  • Low-threshold yellow light solid laser based on energy transfer

Examples

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Effect test

Embodiment 1

[0034] Example 1: When the chemical formula of the laser gain medium used is (Gd 0.18 Lu 0.5 Dy 0.3 Ce 0.02 ) 3 Al 5 O 12 , that is, when the values ​​of x, y, and z are x=0.500, y=0.30, and z=0.02, respectively, 450nm GaN is used as the LD pump source. 2 O 3 , Lu 2 O 3 , Eu 2 O 3 and Gd 2 O 3 Raw material dissolved in dilute HNO 3 , respectively formulated into Dy(NO 3 ) 3 , Gd(NO 3 ) 3 , Eu(NO 3 ) 3 and Lu(NO 3 ) 3 solution, using the calibrated nitrate solution as a raw material, according to the stoichiometric proportion (Gd 0.18 Lu 0.5 Dy 0.3 Ce 0.02 ) 3 Al 5 O 12 , respectively measure a certain volume of nitrate solution, mix the above five nitrates together, and continue to vigorously stir and mix. In order to improve the powder properties, the concentration of 98.5% (NH 4 ) 2 SO 4 The solution is a dispersant, which is added dropwise to the continuously stirred mixed nitrate solution, using 1.4mol / L NH 4 HCO 3 The solution was used as ...

Embodiment 2

[0037] Example 2: When the chemical formula of the laser gain medium used is (Gd 0.44 Lu 0.4 Dy 0.15 Ce 0.01 ) 3 Al 5 O 12 , that is, when the values ​​of x, y, and z are respectively x=0.40, y=0.15, and z=0.01, 450nm GaN is used as the LD pump source. 2 O 3 , Lu 2 O 3 , Eu 2 O 3 and Gd 2 O 3 Raw material dissolved in dilute HNO 3 , respectively formulated into Dy(NO 3 ) 3 , Gd(NO 3 ) 3 , Eu(NO 3 ) 3 and Lu(NO 3 ) 3 solution, using the calibrated nitrate solution as a raw material, according to the stoichiometric proportion (Gd 0.44 Lu 0.4 Dy 0.15 Ce 0.01 ) 3 Al 5 O 12 , respectively measure a certain volume of nitrate solution, mix the above five nitrates together, and continue to vigorously stir and mix. In order to improve the powder properties, the concentration of 99.0% (NH 4 ) 2 SO 4 The solution is a dispersant. Add dropwise to a continuously stirred mixed nitrate solution using 1.5 mol / L NH 4 HCO 3 The solution was used as a precipitan...

Embodiment 3

[0040] Example 3: When the chemical formula of the laser gain medium used is (Gd 0.45 Lu 0.5 Dy 0.03 Ce 0.02 ) 3 Al 5 O 12 , that is, when the values ​​of x, y, and z are respectively x=0.500, y=0.03, and z=0.02, 450nm GaN is used as the LD pump source. 2 O 3 , Lu 2 O 3 , Eu 2 O 3 and Gd 2 O 3 Raw material dissolved in dilute HNO 3 , respectively formulated into Dy(NO 3 ) 3 , Gd(NO 3 ) 3 , Eu(NO 3 ) 3 and Lu(NO 3 ) 3 solution, using the calibrated nitrate solution as a raw material, according to the stoichiometric proportion (Gd 0.45 Lu 0.5 Dy 0.03 Ce 0.02 ) 3 Al 5 O 12 , respectively measure a certain volume of nitrate solution, mix the above five nitrates together, and continue to vigorously stir and mix. In order to improve the powder properties, the concentration of 99.5% (NH 4 ) 2 SO 4 The solution was used as a dispersant and was added dropwise to the continuously stirred mixed nitrate solution, using 1.6mol / L NH 4 HCO 3 The solution was ...

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Abstract

The invention discloses a low-threshold yellow light solid-state laser based on energy transfer. The low-threshold yellow light solid-state laser comprises a pumping source, a focusing coupling system and a resonant cavity, the resonant cavity comprises an input mirror, an output mirror and a laser gain medium, the input mirror and the output mirror are oppositely arranged in a resonant cavity body, the laser gain medium is Ce, Dy: LuGdAG transparent ceramic, the chemical formula of the laser gain medium is (Gd1-x-y-zLuxDyyCez) 3Al5O12, x is larger than or equal to 0.30 and smaller than or equal to 0.5, y is larger than or equal to 0.03 and smaller than or equal to 0.3, z is larger than or equal to 0.005 and smaller than or equal to 0.02, and the Ce, Dy: LuGdAG transparent ceramic is prepared through a coprecipitation method. Ce, Dy: LuGdAG transparent ceramic is adopted as a laser gain medium, Ce < 3 + > is co-doped, Dy < 3 + > can transmit absorbed photon energy of wavelength to Ce < 3 + >, so that 5d-4f transition of Ce < 3 + > is increased, doping of Gd < 3 + > improves energy level loss among ions, in addition, Gd < 3 + > is doped as ions with large radiuses, so that crystal lattices doped with multiple ions are more stable, and finally, efficient yellow laser output is realized.

Description

technical field [0001] The invention belongs to the field of solid-state lasers, in particular to a low-threshold yellow light solid-state laser based on energy transfer. Background technique [0002] Yellow laser (550-620nm) has important applications in spectral analysis, lidar, medical cosmetology and biochemical monitoring. There are several ways to obtain the yellow light band: nonlinear crystal frequency doubling (patent CN105071217), dual-wavelength sum-frequency, fiber laser combined with nonlinear optical technology, and Raman laser. However, the above methods are mainly realized by nonlinear frequency conversion of infrared lasers. This results in: on the one hand, the fundamental frequency optical mode competition in the nonlinear conversion process leads to poor stability of the yellow light output power and poor beam quality; on the other hand, the complexity of the system directly leads to the larger volume of the laser , which has a serious impact on the rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/16C04B35/50C04B35/622C04B35/626C04B35/645
CPCC04B35/50C04B35/622C04B35/62675C04B35/6455H01S3/1631C04B2235/3217C04B2235/3224C04B2235/3229C04B2235/602C04B2235/656C04B2235/6567C04B2235/6581C04B2235/662C04B2235/9653
Inventor 张乐袁明星周天元郑欣雨周春鸣李明程欣李延彬魏帅王忠英邵岑康健陈浩
Owner XUZHOU NORMAL UNIVERSITY
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