Analysis of output characteristics introduced by non-uniform coolant in direct-liquid-cooled multi-disk laser
| Autor: | Cao Haixia, Xu Ruan, Jianli Shang, Zhang Kai, Ganghua Wang, Yu Ma, Hua Su, Deyuan Shen, Bo Tu, Qiongsong Gao, Tang Chun, Yi Jiayu, Jing Wu |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
business.industry Oscillation 02 engineering and technology 021001 nanoscience & nanotechnology Laser 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Coolant law.invention 010309 optics Resonator Optics Solid-state laser law 0103 physical sciences Laser beam quality Disk laser Electrical and Electronic Engineering Physical and Theoretical Chemistry 0210 nano-technology business Astrophysics::Galaxy Astrophysics Beam (structure) |
| Zdroj: | Optics Communications. 436:26-33 |
| ISSN: | 0030-4018 |
| Popis: | The near field of the probe beam after passing through the gain module is measured. The “streamer effect” is first discovered in the experiment, which is characterized as continuity in the flow direction and non-uniformity in the lateral direction with high spatial frequency. To explain the “streamer effect”, a fluid–solid coupling model and an unstable resonator oscillation model of the direct-liquid-cooled thin-disk laser are established. The simulation results show that the non-uniformity of the coolant along the width of the flow channel gives rise to the streamer effect. A feasible cooling channel to achieve a high uniformity coolant is proposed and experimentally verified. At CW pumping of 9.6 kW, the influence of coolant on the output beam quality can be controlled at β |
| Databáze: | OpenAIRE |
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