Surface Characteristics of CaF2 Crystal Ablated by Femtosecond Laser

被引：1

作者：

Guo Taiyong ^{[1
]}

Zhang Limu ^{[1
]}

Ren Yingying ^{[1
]}

Cai Yangjian ^{[1
]}

Romero, Carolina ^{[2
]}

Vazquez de Aldana, Javier R. ^{[2
]}

机构：

[1] Shandong Normal Univ, Sch Phys & Elect, Ctr Light Manipulat & Applicat, Shandong Prov Key Lab Opt & Photon Device, Jinan 250014, Shandong, Peoples R China

[2] Univ Salamanca, Dept Appl Phys, Laser Microproc Grp, Salamanca 37008, Spain

来源：

ACTA OPTICA SINICA | 2019年 / 39卷 / 01期

关键词：

physical optics; femtosecond laser ablation; microstructure; incubation effect; CaF2; crystal;

D O I：

10.3788/AOS201939.0126019

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Femtosecond laser is used to ablate a CaF2 crystal surface. By varying the laser parameters, we produce the microstructures (including ablation holes and lines) using stationary focusing ablation and dynamic scanning. The laser-induced microstructures on CaF2 crystal surface under both processing modes are investigated to obtain the parameter dependence and ablation threshold. The calculation results reveal that the incubation factor is 0.0033 in the stationary focusing case; whereas, in the case of dynamic scanning, the incubation factor is 0.0013 or 0.0052 when the scanning direction is perpendicular or parallel to the laser polarization, respectively. The results reveal that the incubation effect plays an important role in the process of femtosecond laser ablation on crystal surface.

引用

页数：7

共 26 条

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