Efficient ultrafast laser writing with elliptical polarization

被引：29

作者：

Lei, Yuhao ^{[1
]}

Shayeganrad, Gholamreza ^{[1
]}

Wang, Huijun ^{[1
]}

Sakakura, Masaaki ^{[1
]}

Yu, Yanhao ^{[1
]}

Wang, Lei ^{[1
]}

Kliukin, Dmitrii ^{[1
]}

Skuja, Linards ^{[2
]}

Svirko, Yuri ^{[3
]}

Kazansky, Peter G. ^{[1
]}

机构：

[1] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, England

[2] Univ Latvia, Inst Solid State Phys, 8 Kengaraga Str, LV-1063 Riga, Latvia

[3] Univ Eastern Finland, Inst Photon, Dept Phys & Math, FI-80101 Joensuu, Finland

来源：

LIGHT-SCIENCE & APPLICATIONS | 2023年 / 12卷 / 01期

基金：

欧盟地平线“2020”; 欧洲研究理事会; 芬兰科学院;

关键词：

SELF-TRAPPED HOLES; FORM BIREFRINGENCE; FUSED-SILICA; GLASS; FABRICATION; MANIPULATION; ANISOTROPY; ABLATION; DAMAGE;

D O I：

10.1038/s41377-023-01098-2

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Photosensitivity in nature is commonly associated with stronger light absorption. It is also believed that artificial optical anisotropy to be the strongest when created by light with linear polarization. Contrary to intuition, ultrafast laser direct writing with elliptical polarization in silica glass, while nonlinear absorption is about 2.5 times weaker, results in form birefringence about twice that of linearly polarized light. Moreover, a larger concentration of anisotropic nanopores created by elliptically polarized light pulses is observed. The phenomenon is interpreted in terms of enhanced interaction of circularly polarized light with a network of randomly oriented bonds and hole polarons in silica glass, as well as efficient tunneling ionization produced by circular polarization. Applications to multiplexed optical data storage and birefringence patterning in silica glass are demonstrated.

引用

页数：8

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