Effect of spatio-temporal coupling on ultrafast laser direct writing in glass

被引：8

作者：

Li, Qin ^{[1
]}

Li, Wenbo ^{[2
]}

Chu, Wei ^{[2
]}

Cao, Yuxiang ^{[1
]}

Zhang, Wencheng ^{[1
]}

Ma, Hongliang ^{[1
]}

Jin, Zuanming ^{[1
]}

Dai, Ye ^{[1
]}

机构：

[1] Shanghai Univ, Dept Phys, Shanghai 200444, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China

来源：

CHINESE OPTICS LETTERS | 2019年 / 17卷 / 08期

基金：

中国国家自然科学基金;

关键词：

PULSE-FRONT TILT; FEMTOSECOND; FABRICATION;

D O I：

10.3788/COL201917.081402

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Spatio-temporal coupling characteristics of ultrafast laser pulses are quantitatively tailored. An asymmetric microstructure is induced in the focal volume when the laser scans perpendicularly to the direction of the spatial chirp in fused silica. The tilted direction reverses when adding a Dove prism into the light path. The sign of the pulse front tilt can be turned from positive to negative by changing the group delay dispersion by steps. We reveal that the tilted direction of a microstructure depends on spatial chirp, and the interplay between spatio-temporal chirp leads to the change of tilted angles.

引用

页数：5

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