Ultrafast pump and probe investigations on the interaction of femtosecond laser pulses with glass
Ultrafast pump and probe investigations on the interaction of femtosecond laser pulses with glass
复制标题
飞秒激光脉冲与玻璃相互作用的超快泵浦和探针研究
DOI：
10.1117/12.516935
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发表时间：
2003
影响因子：
4
通讯作者：
R. Poprawe
中科院分区：
文献类型：
--
作者：
A. Horn;H. Khajehnouri;E. Kreutz;R. Poprawe
研究了波长为810 nm的超短脉冲激光（100 fs < tp; < 3 ps）辐照玻璃过程中及辐照后玻璃基体结构的变化。等离子体膨胀和应力形成的动态可视化的时间分辨Normarski摄影。光学显微镜可以观察玻璃的结构变化。在100 fs < t < 120 ns的时间范围内显示了空间应力分布和折射率变化。在100 fs < t < 120 ns的时间范围内，用瞬态吸收光谱（TAS）研究了原子的电离状态和色心的形成。光谱的时间变化表现出不同的制度，这可以解释的电子和声子弛豫。
The change of the matrix structure of glass is investigated during and after irradiation with ultrashort pulsed laser radiation (100 fs < tp; < 3 ps) at the wavelength λ = 810 nm. The dynamics of the plasma expansion and the stress formations are visualized by time-resolved Normarski-photography. Optical microscopy visualizes the structural changes in glass. The spatial stress distribution and the refractive index change are shown in the time range 100 fs < t < 120 ns. The ionization state of atoms and/or the formation of color centers has been investigated by transient absorption spectroscopy (TAS) in the time regime 100 fs < t < 120 ns. The temporal change of the spectra shows different regimes, which can be explained by the electron and phonon relaxation.