Ultrafast thermal excitation behaviors of Au films irradiated by polarization-shaped femtosecond laser

被引：0

作者：

Ou, Yan

Lu, Yu

Du, Guangqing ^{[1
]}

Chen, Feng

Yang, Qing

Wu, Yanmin

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Peoples R China

来源：

INTERNATIONAL CONFERENCE ON PHOTONICS AND OPTICAL ENGINEERING (ICPOE 2014) | 2015年 / 9449卷

关键词：

ultrafast thermal excitation behaviors; polarization-shaped femtosecond laser; polarization combination; incident angle; ABLATION;

D O I：

10.1117/12.2075513

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We theoretically investigated the ultrafast thermal excitation behaviors on Au films surface irradiated by polarization-shaped femtosecond laser. The spatio-temporal dynamics of temperature evolution in Au film with polarization-shaped femtosecond laser excitation are obtained based on Finite Element Method (FEM). It is revealed that the phonon temperature fields can be flexibly adjusted by optimizing the polarization state combinations of polarization-shaped double femtosecond laser pulses. The results are attributed to pulse synthetic effect, which closely depends on the polarization state combinations of double femtosecond laser pulses. The study provides the basic for understanding of the thermal excitation dynamics for optimizing laser micro and nano-fabrications via tailoring the polarization state of temporally shaped femtosecond laser.

引用

页数：12