Nanosecond laser-induced multi-focusing damage in the bulk of fused silica

被引：3

作者：

Zhang, Fawang ^{[1
,5
,6
]}

Miao, Xinxiang ^{[2
]}

Wang, Biyi ^{[3
]}

Liu, Xinyi ^{[1
,5
,6
]}

Xu, Man ^{[1
,5
,6
]}

Liu, Hufeng ^{[1
,5
,6
]}

Lu, Tao ^{[4
]}

Qiu, Rong ^{[1
,5
,6
]}

Guo, Decheng ^{[1
,5
,6
]}

Zhou, Qiang ^{[1
,5
,6
]}

Jiang, Yong ^{[1
,5
,6
]}

机构：

[1] Southwest Univ Sci & Technol, Sch Math & Phys, Mianyang 621010, Sichuan, Peoples R China

[2] China Acad Engn Phys, Res Ctr Laser Fus, Mianyang 621900, Sichuan, Peoples R China

[3] Sci & Technol Electroopt Informat Secur Control L, Tianjin 300308, Peoples R China

[4] China Univ Geosci, Sch Automat, Wuhan 430074, Peoples R China

[5] Southwest Univ Sci & Technol, Joint Lab Extreme Condit Matter Properties, Mianyang 621010, Sichuan, Peoples R China

[6] CAEP, Res Ctr Laser Fus, Mianyang 621010, Sichuan, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2023年 / 533卷

基金：

中国国家自然科学基金;

关键词：

Multi-focusing; Filamentary damage; Fused silica; Pulse reshaping; PULSES; FILAMENTATION; PROPAGATION; DYNAMICS;

D O I：

10.1016/j.optcom.2023.129305

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A time-resolved imaging system was utilized in this work to study the focusing behavior during laser-induced filamentary damage in the bulk of fused silica. The results show that focusing behavior has a significant dependence on laser energy. With the increased laser energy, single focusing is changed into multi-focusing. The probability of multi-focusing appearances also increases. During this process, the plasma distribution interval increases, which expands the area affected by the damage. The difference in the stress wave velocity indicates that the multi-focusing formation has temporal and spatial order. Finally, the multi-focusing damage's physical mechanism and formation process are discussed. The results provide a reference for the mechanism of nanosecond laser-induced multi-focusing damage to transparent media.

引用

页数：6

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