Near-infrared femtosecond laser machining initiated by ultraviolet multiphoton ionization

被引：29

作者：

Yu, X. ^{[1
]}

Bian, Q. ^{[1
]}

Zhao, B. ^{[2
]}

Chang, Z. ^{[3
,4
]}

Corkum, P. B. ^{[5
,6
]}

Lei, S. ^{[1
]}

机构：

[1] Kansas State Univ, Manhattan, KS 66506 USA

[2] Univ Nebraska, Dept Phys & Astron, Lincoln, NE 68588 USA

[3] Univ Cent Florida, CREOL, Orlando, FL 32816 USA

[4] Univ Cent Florida, Dept Phys, Orlando, FL 32816 USA

[5] Natl Res Council Canada, Ottawa, ON K1A 0R6, Canada

[6] Univ Ottawa, Ottawa, ON K1N 6N5, Canada

来源：

APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 10期

基金：

美国国家科学基金会;

关键词：

FUSED-SILICA; MULTIWAVELENGTH EXCITATION; OPTICAL-BREAKDOWN; ABLATION; DIELECTRICS; PULSES; IRRADIATION; ENERGY; QUARTZ; FIELD;

D O I：

10.1063/1.4794946

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on the experimental study of microstructures fabricated on the surface of fused silica by two femtosecond laser pulses, a tightly focused 266 nm beam followed by a loosely focused 800 nm beam. By setting the fluence of each pulse below the damage threshold, visible microstructures are fabricated using the combined beams. Our results suggest that the ultraviolet pulse generates seed electrons through multiphoton absorption, and the near-infrared pulse utilizes these electrons to cause damage by avalanche ionization. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4794946]

引用

页数：4

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