When laser ablation is subjected to supersonic Bow,the influence mechanism of airflow on laser ablation behavior is still unclear.A coupled thermal-fluid-structure model is presented to investigate the influence of supersonic airflow on the development of a laser ablation pit.Results show that the aerodynamic convection coohng effect not only reduces the ablation velocity but also changes the symmetry morphology of the ablation pit due to the non-uniform convective heat transfer.Flow mode transition is also observed when the pit becomes deeper,and significant change in Bow pattern and heat transfer behavior are found when the open mode is transformed into the closed mode.
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机译：Experimental Study of the Timing Jitter of a Passively Mode-Locked External-Cavity Semiconductor Laser Subject to Repetition Rate Transitions and Optical Feedback
