Influences of pump beam distribution on thermal lensing spherical aberration in an LD end-pumped Nd:YAG laser

2009 ◽  
Vol 282 (24) ◽  
pp. 4779-4783 ◽  
Author(s):  
Xiao-lu Song ◽  
Bing-bin Li ◽  
Zhen Guo ◽  
Shi-yu Wang ◽  
De-fang Cai ◽  
...  
Keyword(s):  
Nd:Yag Laser ◽  
Pump Beam ◽  
Spherical Aberration ◽  
Thermal Lensing

Analytical model for thermal lensing and spherical aberration in diode side-pumped Nd:YAG laser rod having Gaussian pump profile

2015 ◽  
Vol 24 (12) ◽  
pp. 124205 ◽  
Author(s):  
M H Moghtader Dindarlu ◽  
M Kavosh Tehrani ◽  
H Saghafifar ◽  
A Maleki
Keyword(s):  
Analytical Model ◽  
Nd:Yag Laser ◽  
Spherical Aberration ◽  
Thermal Lensing

scholarly journals Simulation of thermal lensing in an end-pumped Nd:YAG laser rod with Gaussian and super-Gaussian pump beam profile

2019 ◽  
Vol 11 (20) ◽  
pp. 81-84
Author(s):  
Mohammed Jalal Abdul-Razzak
Keyword(s):  
Numerical Simulation ◽  
Pump Power ◽  
Nd:Yag Laser ◽  
Pump Beam ◽  
Focal Length ◽  
Thermal Lensing ◽  
Lensing Effect ◽  
Thermal Lensing Effect ◽  
Lens Focal Length ◽  
Waist Radius

A numerical simulation is made on the thermal lensing effect in an laser diode end-pumped Nd:YAG laser rod. Based on finite element method (FEM), the laser rod temperature distribution is calculated and the focal length is deduced for a Gaussian and super-Gaussian pump beam profiles. At the pump power of 20W, the highest temperature located at the center of end-pumped face was 345K, and the thermal lens focal length was 81.4mm along the x-z axis.  The results indicate that the thermal lensing effect sensitively depend on the pump power, waist radius of the pump beam and the pump distribution in a laser rod geometry.

scholarly journals End-pumped Nd:YVO_4 laser with reduced thermal lensing via the use of a ring-shaped pump beam

2017 ◽  
Vol 42 (15) ◽  
pp. 2910 ◽  
Author(s):  
Di Lin ◽  
W. Andrew Clarkson
Keyword(s):  
Pump Beam ◽  
Thermal Lensing

Diode end pumped Nd:YAG laser at 946 nm with high pulse energy limited by thermal lensing

2009 ◽  
Vol 95 (4) ◽  
pp. 721-730 ◽  
Author(s):  
S. Wang ◽  
H. J. Eichler ◽  
X. Wang ◽  
F. Kallmeyer ◽  
J. Ge ◽  
...  
Keyword(s):  
Pulse Energy ◽  
Nd:Yag Laser ◽  
Thermal Lensing ◽  
High Pulse Energy ◽  
High Pulse

scholarly journals Quantitative measurement of thermal lensing in diode-side-pumped Nd:YAG laser by use of digital holographic interferometry

2016 ◽  
Vol 24 (25) ◽  
pp. 28185 ◽  
Author(s):  
Jianglei Di ◽  
Yang Yu ◽  
Zhaomin Wang ◽  
Weijuan Qu ◽  
Chee Yuen Cheng ◽  
...  
Keyword(s):  
Nd:Yag Laser ◽  
Holographic Interferometry ◽  
Quantitative Measurement ◽  
Thermal Lensing

THE EFFECT OF PUMP PROFILE ON ABSORPTION EFFICIENCY OF A DIODE-SIDE-PUMPED ND:YAG LASER

2016 ◽  
Vol 78 (3) ◽  
Author(s):  
G. Honarasa ◽  
B. Nakhaee ◽  
M. Hatami ◽  
M. Borhani
Keyword(s):  
Solid State ◽  
Laser Diode ◽  
Nd:Yag Laser ◽  
Pump Beam ◽  
Absorption Efficiency ◽  
Slit Width ◽  
Maximum Absorption ◽  
Gaussian Beams ◽  
Solid State Lasers ◽  
Gaussian Profile

In this paper, the Gaussian, Lorentz and Lorentz-Gaussian beams are used as the pump beam in a diode side pumped Nd:YAG leaser and the effects of these beams on the absorption efficiency of the laser are investigated. It is illustrated that the absorption efficiency for Lorentz-Gaussian profile is higher than the two others. Also has been shown that for entrance Lorentz-Gaussian profile, the absorption efficiency is increasing with decreasing the distance from the diodes to the slits and increasing the diameter of the laser rod. It is shown that there is an optimum slit width corresponding to the maximum absorption efficiency for any laser diode side-pumped solid-state lasers.  

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