Modification of transparent materials with ultrashort laser pulses: What is energetically and mechanically meaningful?

被引：63

作者：

Bulgakova, Nadezhda M. ^{[1
,2
]}

Zhukov, Vladimir P. ^{[3
,4
]}

Sonina, Svetlana V. ^{[5
]}

Meshcheryakov, Yuri P. ^{[6
]}

机构：

[1] ASCR, Inst Phys, HiLASE Ctr, Dolni Brezany 25241, Czech Republic

[2] SB RAS, Inst Thermophys, Novosibirsk 630090, Russia

[3] SB RAS, Inst Computat Technol, Novosibirsk 630090, Russia

[4] Novosibirsk State Tech Univ, Novosibirsk 630073, Russia

[5] Novosibirsk State Univ, Novosibirsk 630090, Russia

[6] SB RAS, MA Lavrentyev Hydrodynam Inst, Design & Technol Branch, Novosibirsk 630090, Russia

来源：

JOURNAL OF APPLIED PHYSICS | 2015年 / 118卷 / 23期

基金：

俄罗斯基础研究基金会; 俄罗斯科学基金会;

关键词：

FEMTOSECOND-LASER; WAVE-GUIDES; STRUCTURAL MODIFICATIONS; AMORPHOUS SIO2; FUSED-SILICA; GLASS; TIME; WRITTEN; PLASMA; FABRICATION;

D O I：

10.1063/1.4937896

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A comprehensive analysis of laser-induced modification of bulk glass by single ultrashort laser pulses is presented which is based on combination of optical Maxwell-based modeling with thermoelastoplastic simulations of post-irradiation behavior of matter. A controversial question on free electron density generated inside bulk glass by ultrashort laser pulses in modification regimes is addressed on energy balance grounds. Spatiotemporal dynamics of laser beam propagation in fused silica have been elucidated for the regimes used for direct laser writing in bulk glass. 3D thermoelastoplastic modeling of material relocation dynamics under laser-induced stresses has been performed up to the microsecond timescale when all motions in the material decay. The final modification structure is found to be imprinted into material matrix already at sub-nanosecond timescale. Modeling results agree well with available experimental data on laser light transmission through the sample and the final modification structure. (C) 2015 AIP Publishing LLC.

引用

页数：17

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