Thresholds for femtosecond laser-induced breakdown in bulk transparent solids and water

被引：21

作者：

Schaffer, CB ^{[1
]}

Nishimura, N ^{[1
]}

Mazur, E ^{[1
]}

机构：

[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

来源：

TIME STRUCTURE OF X-RAY SOURCES AND ITS APPLICATIONS | 1998年 / 3451卷

关键词：

ultrafast lasers; laser-induced breakdown thresholds; multiphoton absorption; avalanche ionization; laser-induced damage thresholds;

D O I：

10.1117/12.331836

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present thresholds for optical breakdown in bulk transparent solids and water with 100-fs laser pulses. In solids, we used microscopy and scattering techniques to determine thresholds for plasma formation and permanent damage in a wide variety of materials. Transmission measurements show that damage occurs at energies where there is little absorption of the laser pulse. In water, we used scattering and acoustic techniques to measure the breakdown threshold for 100-fs pulses. In contrast to solids, transmission measurements in water indicate that there is no plasma or bubble formation unless there is significant absorption. For comparison, we also measured breakdown thresholds for 200-ps pulses.

引用

页码：2 / 8

页数：7

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