scholarly journals LD-pumped gas-cooled multislab Nd:glass laser amplification to joule level

2018 ◽  
Vol 6 ◽  
Author(s):  
Wenfa Huang ◽  
Jiangfeng Wang ◽  
Xinghua Lu ◽  
Tingrui Huang ◽  
Jiangtao Guo ◽  
...  
Keyword(s):  
Pump Energy ◽  
High Energy ◽  
Wavefront Aberration ◽  
Laser Amplifier ◽  
Thermally Induced ◽  
Laser Amplification ◽  
Helium Gas ◽  
Gas Cooling ◽  
Diode Pumped ◽  
Nd:Glass Laser

We demonstrate a laser diode end-pumped helium gas-cooled multislab Nd:glass laser amplifier. The design and thermal management of the proposed laser amplifier are discussed. The thermally induced wavefront aberration of the slabs was also measured and compared with simulation results. A small-signal single-pass longitudinal gain of 1.8 was measured with a pump energy of 7.3 J. With an injected seed energy of 0.6 mJ, the output energy from the amplifier reached 0.5 J at 0.2 Hz and 0.43 J at 0.5 Hz in a multipass extraction geometry, thus demonstrating the feasibility of diode-pumped, high-energy lasers with direct gas cooling.

scholarly journals High-power, Joule-class, temporally shaped multi-pass ring laser amplifier with two Nd:glass laser heads

2019 ◽  
Vol 7 ◽  
Author(s):  
Jiangtao Guo ◽  
Jiangfeng Wang ◽  
Hui Wei ◽  
Wenfa Huang ◽  
Tingrui Huang ◽  
...  
Keyword(s):  
High Power ◽  
Ring Laser ◽  
Laser System ◽  
High Energy ◽  
Fiber Structure ◽  
Laser Amplifier ◽  
Regenerative Amplifier ◽  
Thermally Induced ◽  
Diode Pumped ◽  
Nd:Glass Laser

A high-power, Joule-class, nanosecond temporally shaped multi-pass ring laser amplifier system with two neodymium-doped phosphate glass (Nd:glass) laser heads is demonstrated. The laser amplifier system consists of three parts: an all-fiber structure seeder, a diode-pumped Nd:glass regenerative amplifier and a multi-pass ring amplifier, where the thermally induced depolarization of two laser heads is studied experimentally and theoretically. Following the injection of a square pulse with the pulse energy of 0.9 mJ and pulse width of 6 ns, a 0.969-J high-energy laser pulse at 1 Hz was generated, which had the ability to change the waveform arbitrarily, based on the all-fiber structure front end. The experimental results show that the proposed laser system is promising to be adopted in the preamplifier of high-power laser facilities.

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.

High-energy, diode-pumped laser amplification in Yb:CaF2 and Yb:SrF2

2009 ◽  
Author(s):  
M. Siebold ◽  
M. Hornung ◽  
R. Bödefeld ◽  
M. Wolf ◽  
J. Koerner ◽  
...  
Keyword(s):  
High Energy ◽  
Laser Amplification ◽  
Diode Pumped

scholarly journals A high energy nanosecond cryogenic cooled Yb:YAG active-mirror amplifier system

2014 ◽  
Vol 2 ◽  
Author(s):  
Xiaojin Cheng ◽  
Jianlei Wang ◽  
Zhongguo Yang ◽  
Jin Liu ◽  
Lei Li ◽  
...  
Keyword(s):  
Low Temperature ◽  
Power Amplifier ◽  
Room Temperature ◽  
High Energy ◽  
Master Oscillator ◽  
Maximum Output ◽  
Laser Amplifier ◽  
Optical Efficiency ◽  
Diode Pumped ◽  
Active Mirror

Abstract A diode-pumped master oscillator power amplifier system based on a cryogenic Yb:YAG active-mirror laser has been developed. The performances of the laser amplifier at low temperature and room temperature have been investigated theoretically and experimentally. A maximum output energy of 3.05 J with an optical-to-optical efficiency of 14.7% has been achieved by using the master amplifier system.

Research and control of thermal effect in a helium gas-cooled multislab Nd:glass laser amplifier

2015 ◽  
Author(s):  
Yuqi Zhang ◽  
Jiangfeng Wang ◽  
Xinghua Lu ◽  
Wenfa Huang ◽  
Xuechun Li
Keyword(s):  
Thermal Effect ◽  
Laser Amplifier ◽  
Helium Gas ◽  
And Control ◽  
Nd:Glass Laser

Scalable design for a high energy cryogenic gas cooled diode pumped laser amplifier

2015 ◽  
Vol 54 (13) ◽  
pp. 4227 ◽  
Author(s):  
P. D. Mason ◽  
M. Fitton ◽  
A. Lintern ◽  
S. Banerjee ◽  
K. Ertel ◽  
...  
Keyword(s):  
High Energy ◽  
Laser Amplifier ◽  
Diode Pumped ◽  
Scalable Design
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