scholarly journals Thermal lens analysis in a diode-pumped 10 Hz 100 mJ Yb:YAG amplifier

2020 ◽  
Vol 8 ◽  
Author(s):  
Victor Hariton ◽  
Celso Paiva João ◽  
Hugo Pires ◽  
Mario Galletti ◽  
Gonçalo Figueira
Keyword(s):  
Temperature Distribution ◽  
Thermal Lens ◽  
Focal Length ◽  
High Energy ◽  
Gain Medium ◽  
Thermal Lensing ◽  
Experimental Measurements ◽  
Pumping Power ◽  
Diode Pumped ◽  
Spatio Temporal

We address the power scaling issue in end-pumped laser rod amplifiers by studying, experimentally and numerically, the magnitude of thermal lensing in a high-energy diode-pumped Yb:YAG crystal. The spatio-temporal temperature profile of the gain medium and the focal length of the induced thermal lens are determined numerically. The influence of the repetition rate and pumping power on the temperature distribution is analyzed. Experimental measurements covered repetition rates between 1 and 10 Hz and up to 4 kW pumping power.

scholarly journals Modeling and Measurement of Thermal Effect in a Flashlamp-Pumped Direct-Liquid-Cooled Split-Disk Nd:LuAG Ceramic Laser Amplifier

Photonics ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 97
Author(s):  
Shengzhe Ji ◽  
Wenfa Huang ◽  
Tao Feng ◽  
Long Pan ◽  
Jiangfeng Wang ◽  
...  
Keyword(s):  
Thermal Stress ◽  
Thermal Effects ◽  
Thermal Deformation ◽  
High Energy ◽  
Gain Medium ◽  
Wavefront Aberration ◽  
Experimental Measurements ◽  
Laser Amplifier ◽  
Design And Optimization ◽  
Ceramic Laser

In this paper, a model to predict the thermal effects in a flashlamp-pumped direct-liquid-cooled split-disk Nd:LuAG ceramic laser amplifier has been presented. In addition to pumping distribution, the model calculates thermal-induced wavefront aberration as a function of temperature, thermal stress and thermal deformation in the gain medium. Experimental measurements are carried out to assess the accuracy of the model. We expect that this study will assist in the design and optimization of high-energy lasers operated at repetition rate.

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

Determination of thermal focal length and pumping radius in gain medium in laser-diode-pumped Nd:YVO4 lasers

2002 ◽  
Vol 81 (12) ◽  
pp. 2145-2147 ◽  
Author(s):  
Feng Song ◽  
Chaobo Zhang ◽  
Xin Ding ◽  
Jingjun Xu ◽  
Guangyin Zhang ◽  
...  
Keyword(s):  
Laser Diode ◽  
Focal Length ◽  
Gain Medium ◽  
Diode Pumped ◽  
Thermal Focal Length

Study on Thermal Lensing of a Diode-pumped Nd:YVO4 Crystal by Using Thermal Lens

2013 ◽  
Vol 63 (2) ◽  
pp. 146-151
Author(s):  
Si Jin LEE ◽  
Kang in LEE ◽  
Jong hoon LEE* ◽  
Ji woong CHOI ◽  
Hye rin CHOI ◽  
...  
Keyword(s):  
Thermal Lens ◽  
Thermal Lensing ◽  
Diode Pumped

Real-time measurement of temperature distribution inside a gain medium of a diode-pumped Er^3+/Yb^3+ 155  μm laser

2017 ◽  
Vol 42 (17) ◽  
pp. 3383 ◽  
Author(s):  
Chenchen Xu ◽  
Yidong Huang ◽  
Yanfu Lin ◽  
Jianhua Huang ◽  
Xingxong Gong ◽  
...  
Keyword(s):  
Temperature Distribution ◽  
Real Time ◽  
Gain Medium ◽  
Time Measurement ◽  
Real Time Measurement ◽  
Diode Pumped

Blue 473-nm solid state diode pumped Nd:YAG/BiBO microchip laser

2010 ◽  
Vol 18 (1) ◽  
Author(s):  
A. Antończak ◽  
J. Sotor ◽  
M. Matysiak ◽  
K. Abramski
Keyword(s):  
Blue Light ◽  
Second Harmonic ◽  
Nonlinear Crystal ◽  
Phase Matching ◽  
Type I ◽  
Pumping Power ◽  
Diode Pumped ◽  
Light Generation ◽  
Power Diode ◽  
Matching Type

AbstractIn this paper we present a design of a compact, low power diode-pumped CW Nd:YAG laser operating at 946 nm with intracavity blue light generation at 473 nm for battery operated applications. The nonlinear crystal used in the experiment is a BiBO crystal cut for phase-matching type I. Using 0.8 W of pumping power, 20-mW stabile output power of blue light was achieved. The second harmonic generation conversion efficiency was 2.5%.

scholarly journals Algorithm for evaluation of temperature distribution of a vapor cell in a diode-pumped alkali laser system: part I

2014 ◽  
Vol 22 (11) ◽  
pp. 13988 ◽  
Author(s):  
Juhong Han ◽  
You Wang ◽  
He Cai ◽  
Wei Zhang ◽  
Liangping Xue ◽  
...  
Keyword(s):  
Temperature Distribution ◽  
Laser System ◽  
Vapor Cell ◽  
System Part ◽  
Diode Pumped

POLARIS - A High Energy, 2.5x10^11 Temporal Contrast, High Intensity Diode Pumped Solid State Laser

2014 ◽  
Author(s):  
Marco Hornung ◽  
Sebastian Keppler ◽  
Alexander Kessler ◽  
Hartmut Liebetrau ◽  
Andreas Seidel ◽  
...  
Keyword(s):  
Solid State ◽  
High Intensity ◽  
High Energy ◽  
Solid State Laser ◽  
Temporal Contrast ◽  
State Laser ◽  
Diode Pumped
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