Influences of Pump Spot Radius and Depth of Focus on the Thermal Effect of Tm:YAP Crystal

Hongliang Zhang; Ya Wen; Lin Zhang; Zhen Fan; Jinge Liu; Chunting Wu

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자료유형: 학술저널

저자정보: Hongliang Zhang (Changchun University of Technology) Ya Wen (Changchun University of Technology) Lin Zhang (Changchun University of Technology) Zhen Fan (Changchun University of Technology) Jinge Liu (Changchun University of Technology) Chunting Wu (Changchun University of Technology)

저널정보: 한국광학회 Current Optics and Photonics Current Optics and Photonics Vol.3 No.5

발행연도: 2019.10

수록면: 458 - 465 (8page)

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The thermal effect and the light output of a laser crystal under different pumping depths were reported., Based on the thermal model of a single-ended pumped Tm:YAP crystal, the thermal stress coupled model used Comsol to theoretically calculate the effect of changing the pump spot size and pump depth on crystal heat distribution and stress distribution. The experimental results showed that the laser output power first increased and then decreased with increasing pump spot size. As the depth of focus increased, the laser output power first increased and then decreased. The experimental results were consistent with the theoretical simulation results. The theory of pump spot radius and depth of focus in this paper provided an effective simulation method for mitigating thermal effects, and provided theoretical supports for laser crystals to obtain higher laser output power.

#Tm:YAP crystal #Thermal effect #Depth of focus #Pump spot

I. INTRODUCTION
II. Analysis of Thermal Field and Stress Field in Tm:YAP Crystal
III. INFLUENCES OF DIFFERENT PUMP SPOT RADIUS AND DEPTH OF FOCUS ON HEAT DISTRIBUTION AND STRESS DISTRIBUTION IN THE CRYSTAL
IV. ANALYSIS OF THE INFLUENCES OF DIFFERENT PUMP SPOT RADIUS AND FOCUSING DEPTH ON OUTPUT POWER
V. CONCLUSION
REFERENCES

참고문헌 (10)

참고문헌 신청

J. Li / 2010 / Diode-pumped room temperature single frequency Tm : YAP laser / Laser Phys. Lett 7:203~205

Q. Yao / 2018 / Beam quality improvement by controlling thermal lens spherical aberration in an end-pumped Nd : YVO4 laser / Appl. Opt 57:2245~2249

Q. Pengfei / 2017 / Adaptive adjusting technique of thermal effect to laser beam quality / Acta Opt. Sin 37:0514001

K. Yumashev / 2017 / Thermal stress and end-bulging in monoclinic crystals : the case study of double tungstates / Appl. Opt 56:3857~3866

B. Fang / 2015 / Thermal analysis of double-end-pumped Tm : YLF laser / Laser Phys 25:075003

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