A simple method to determine the thermal focal length of solid-state lasers with rate equation

2007 ◽  
Vol 39 (4) ◽  
pp. 778-781 ◽  
Author(s):  
Jing Zou ◽  
Shengzhi Zhao ◽  
Kejian Yang ◽  
Guiqiu Li
Keyword(s):  
Solid State ◽  
Rate Equation ◽  
Focal Length ◽  
Solid State Lasers ◽  
Simple Method ◽  
Thermal Focal Length

Thermal Effects and Thermal Focal Length Measurement of Laser Diode End-Pumped Solid-State Lasers

2010 ◽  
Vol 37 (10) ◽  
pp. 2445-2450
Author(s):  
潘孙强 Pan Sunqiang ◽  
刘崇 Liu Chong ◽  
赵智刚 Zhao Zhigang ◽  
董延涛 Dong Yantao ◽  
相方莉 Xiang Fangli ◽  
...  
Keyword(s):  
Solid State ◽  
Laser Diode ◽  
Thermal Effects ◽  
Focal Length ◽  
Length Measurement ◽  
Solid State Lasers ◽  
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

scholarly journals Finite Element Analysis of Thermal Effects in Diode End-Pumped Solid-State Lasers

2017 ◽  
Vol 2017 ◽  
pp. 1-15 ◽  
Author(s):  
Moustafa Sayem El-Daher
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Solid State ◽  
Thermal Effects ◽  
Beam Quality ◽  
Focal Length ◽  
Thermal Lensing ◽  
Solid State Lasers ◽  
Element Analysis ◽  
Composite Crystals

Thermal effects are the main obstacle to getting high power and good beam quality in diode end-pumped solid-state lasers. In this work, a theoretical investigation of thermal effects in single and dual end-pumped solid-state lasers is carried out using finite element analysis (FEA) for a selected number of widely used laser producing materials, namely, Nd:YAG, Yb:YAG, and Nd:KGW. Crystals with different dimensions are also investigated both in single and in dual end-pumped configuration. Finally, the effect of using composite crystals on thermal lensing is investigated. An experiment to measure the thermal focal length for two different crystals was carried out and a comparison with FEA computed focal length of the thermal lens is made. In all cases studied in this work, results show clear effects of thermal lensing with some differences depending on crystal type, pump power, and size.

scholarly journals Mitigation of Thermal Effects in End Pumping of Nd : YAG and Composite YAG/Nd : YAG Laser Crystas, Modelling and Experiments-=SUP=-1-=/SUP=-

2021 ◽  
Vol 91 (8) ◽  
pp. 1268
Author(s):  
N.M. Al-Hosiny ◽  
A.A. El-Maaref ◽  
R.M. El-Agmy
Keyword(s):  
Stress Intensity ◽  
Thermal Effects ◽  
Focal Length ◽  
Solid State Lasers ◽  
Yag Laser ◽  
Thermally Induced ◽  
Yag Lasers ◽  
Thermal Focal Length ◽  
Composite Laser ◽  
Good Agreement

In this work, we have presented a finite element (FE) numerical modelling simulations to study and analyze the thermal effects in Nd : YAG and composite YAG/Nd : YAG laser rods. We have calculated the temperature distributions, stress intensity and thermal focal lengths at different pump powers for both rods. The FE simulations showed that using composite laser rod of undoped cap reduces the maximum value of stress intensity and thermal focal length by ~35% and ~ 50%, respectively. We have verified the FE calculations experimentally by direct measurement of focal length of thermally induced lens by using Hartmann-Shack wavefront sensor. Good agreement was obtained between FE calculations and experimental measurements. Keywords: Nd : YAG lasers, Thermal lens, Wavefront sensing, solid state lasers.

More precise determination of thermal lens focal length for end-pumped solid-state lasers

2006 ◽  
Vol 266 (2) ◽  
pp. 620-626 ◽  
Author(s):  
Shuzhen Fan ◽  
Xingyu Zhang ◽  
Qingpu Wang ◽  
Shutao Li ◽  
Shuanghong Ding ◽  
...  
Keyword(s):  
Solid State ◽  
Thermal Lens ◽  
Focal Length ◽  
Precise Determination ◽  
Solid State Lasers ◽  
Lens Focal Length
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