Jiayu Yi, Bo Tu, Haixia Cao, Xiangchao An, Yuan Liao, Jianli Shang, Jing Wu, Lingling Cui, Hua Su, Xu Ruan, Qingsong Gao, Chun Tang, Kai Zhang. Design and Experiment on High-Power Direct-Liquid-Cooled Thin-Disk Solid-State Laser[J]. Chinese Journal of Lasers, 2018, 45(12): 1201004
- Chinese Journal of Lasers
- Vol. 45, Issue 12, 1201004 (2018)
Fig. 1. Orthogonal layout of pumping source, laser, and flow field in direct-liquid-cooled thin-disk laser
Fig. 2. Convective heat transfer coefficient hc and pressure drop P versus flow velocity in micro-channel
Fig. 3. Design limit for maximum heat generation
Fig. 4. s-polarization light distribution for gain medium after thermal depolarization
Fig. 5. Single disk loss versus Brewster angle deviation
Fig. 6. Single disk loss introduced by thermo-optic effect
Fig. 7. Round-trip loss versus number of disks
Fig. 8. Output power versus number of disks at different loss of single disks
Fig. 9. Output power and optical-to-optical conversion efficiency
Fig. 10. Thermal aberration under side-pumping
Fig. 11. Influence and compensation of intra-cavity cylindrical defocus
Fig. 12. Thermal aberration caused by cooling flow field and tilt self-compensation. (a) Intra-cavity aberration distribution under same flow direction; (b) schematic of tilt self-compensation; (c) intra-cavity aberration distribution under opposite flow direction
Fig. 13. Legendre polynomial expansion of phase aberration
Fig. 14. Typical distributions of temperature and fOPD due to laser absorption by liquid. (a) Temperature distribution of liquid with a single layer. (b) fOPD of liquid with 20 layers
Fig. 15. Effect of fOPD due to laser absorption by liquid on transient variation of laser beam quality
Fig. 16. Experiment device of direct-liquid-cooled thin-disk solid-state laser. (a) Design diagram; (b) output picture of the laser system
Fig. 17. Output single pulse energy and optical-to-optical conversion efficiency
Fig. 18. Average output power characteristics under different pumping powers
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Table 1. Main physical parameters for several laser cooling liquids
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