Precisely Measuring the Thermal Focal Length in the Orthogonally Polarized Nd:YLF Laser by Simultaneous Self-Mode-Locking of TEM0,0 and TEM1,0 Modes

2019 ◽  
Author(s):  
En-Hsu Lin ◽  
Di Li ◽  
Hsing-Chih Liang
Keyword(s):  
Focal Length ◽  
Mode Locking ◽  
Thermal Focal Length

The interferometric measurement of thermal lens effect in a LD pumped Tm-doped bulk laser

2021 ◽  
Author(s):  
Yuantao Zhao ◽  
Shengzhi Zhao ◽  
Tao Li ◽  
Yizhou Liu ◽  
Chun Wang ◽  
...  
Keyword(s):  
Temperature Distribution ◽  
Thermal Lens ◽  
Precise Measurement ◽  
Laser Crystal ◽  
Focal Length ◽  
Mode Locking ◽  
Experimental Result ◽  
Interferometric Method ◽  
Thermal Lens Effect ◽  
Thermal Focal Length

Abstract Directly measuring thermal focal length is important for designing and optimizing the mode locking oscillator, especially for a 2-μm mode-locking laser. In this paper, we propose a novel interferometric method for measuring the thermal focal length in a 2-μm mode-locking laser. This method could give a precise measurement of the thermal focal length inside a long-folded oscillator in both lasing and non-lasing operation. We also theoretically calculate the thermal focal length based on the temperature distribution inside the laser crystal, which matches well with the experimental result

Simultaneous self-mode-locking of TEM0,0 and TEM1,0 modes in a Nd:YVO4 laser: Application for measuring the thermal focal length

Laser Physics ◽  
2011 ◽  
Vol 21 (3) ◽  
pp. 480-484 ◽  
Author(s):  
H. C. Liang ◽  
P. Y. Chiang ◽  
Y. J. Huang ◽  
Y. C. Lin ◽  
Y. F. Chen
Keyword(s):  
Focal Length ◽  
Mode Locking ◽  
Laser Application ◽  
Thermal Focal Length

Thermal focal length measurement of an LD-end-pumped Tm,Ho:GdVO4 laser

Laser Physics ◽  
2009 ◽  
Vol 19 (6) ◽  
pp. 1213-1215 ◽  
Author(s):  
L. J. Li ◽  
B. Q. Yao ◽  
C. T. Wu ◽  
Y. L. Ju ◽  
Y. J. Zhang ◽  
...  
Keyword(s):  
Focal Length ◽  
Length Measurement ◽  
Thermal Focal Length

scholarly journals Determination of thermal focal length of diode laser end-pumped solid-state amplifier

2007 ◽  
Vol 56 (6) ◽  
pp. 3240
Author(s):  
He Wan-Jun ◽  
Yao Bao-Quan ◽  
Wang Yue-Zhu ◽  
Ju You-Lun
Keyword(s):  
Solid State ◽  
Diode Laser ◽  
Focal Length ◽  
Thermal Focal Length

Measurement of thermal focal length with M2in solid state laser

1999 ◽  
Author(s):  
Weiling Huang ◽  
Ying Gao ◽  
Hailin Wang ◽  
Zhouyou Zhou ◽  
Yihong Chen
Keyword(s):  
Solid State ◽  
Focal Length ◽  
Solid State Laser ◽  
State Laser ◽  
Thermal Focal Length

New method to measure the ultrashort thermal focal length of high-power solid state laser

2002 ◽  
Author(s):  
Baigang Zhang ◽  
Jianquan Yao ◽  
Degang Xu ◽  
Yizhong Yu ◽  
Tao Wang ◽  
...  
Keyword(s):  
Solid State ◽  
High Power ◽  
Focal Length ◽  
Solid State Laser ◽  
New Method ◽  
State Laser ◽  
Thermal Focal Length

Analysis of Thermal Effects within Cylindrical Shape Solid-State Laser Rod

2020 ◽  
Vol 1002 ◽  
pp. 264-272
Author(s):  
Mohammed Jalal Abdul Razzaq ◽  
Kadhim A. Hubeatir
Keyword(s):  
Thermal Effects ◽  
Integral Transform ◽  
Focal Length ◽  
Maximum Temperature ◽  
Cylindrical Shape ◽  
Maximum Temperature Difference ◽  
Transform Method ◽  
Side Face ◽  
Verified Software ◽  
Thermal Focal Length

In this work, a temperature-dependent analytical model was modified to predict the thermal effects of diode laser double–end-pumped cylindrical laser rod under Gaussian pump beam distribution. Heat load and temperature distribution were analyzed using the Kirchhoff integral transform method. Results show that a maximum temperature difference of approximately 69.61 K was obtained on each side face of the laser rod at a maximum power of 40 W (equally divided on each face). The total thermal focal length of approximately 34.64 mm was calculated under the Gaussian pumping profile. The finite element method code incorporated with well-verified software was used to numerically verify the obtained results, where the analytical and numerical results are highly matched. The results reveal that the total thermal focal length produced in a double–end-pumped geometry is two times less than that obtained from a single-end-pumped geometry.

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