Mechanism of dynamic plasma motion in internal modification of glass by fs-laser pulses at high pulse repetition rate.
Mechanism of dynamic plasma motion in internal modification of glass by fs-laser pulses at high pulse repetition rate.
复制标题
高脉冲重复率飞秒激光脉冲对玻璃内部改性的动态等离子体运动机制。
作者：
I. Miyamoto;Y. Okamoto;R. Tanabe;Yoshiro Ito;K. Cvecek;Michael Schmidt
基于速率方程模型，结合热传导模型，模拟了高重复频率飞秒激光脉冲对玻璃内部改性过程中自由电子密度的演化。模型表明，几何焦点附近产生的高吸收小等离子体周期性地向激光源移动，覆盖远大于焦点体积的区域。模拟结果与高速摄像机观测到的1MHz飞秒激光脉冲对硼硅酸盐玻璃内部改性过程中产生的等离子体的动态运动定性一致。本文还揭示了玻璃在蓄热显著时内部变质的物理机制。
Evolution of free-electron density in internal modification of glass by fs-laser pulses at high pulse repetition rates is simulated based on rate equation model, which is coupled with thermal conduction model in order to incorporate the effect of thermal ionization. Model shows that highly absorbing small plasma generated near the geometrical focus moves toward the laser source periodically to cover the region, which is much larger than focus volume. The simulated results agree qualitatively with dynamic motion of plasma produced in internal modification of borosilicate glass by fs-laser pulses at 1 MHz through the observation using high-speed video camera. The paper also reveals the physical mechanism of the internal modification of glass when heat accumulation is significant.
用于观察超快激光微加工过程中过渡效应的高速泵浦探针装置
影响因子：
3.4
作者：
Alexeev;Heberle;Cvecek;Nagulin;Schmidt
通讯作者：
Schmidt
影响因子：
3.8
作者：
Miyamoto, Isamu;Cvecek, Kristian;Helvajian, Henry
通讯作者：
Helvajian, Henry
影响因子：
3.8
作者：
Miyamoto, Isamu;Cvecek, Kristian;Schmidt, Michael
通讯作者：
Schmidt, Michael