Song Juan, Ye Junyi, Qian Mengdi, Lin Xian, Bian Huadong, Dai Ye, Ma Guohong, Chen Qingxi, Zhao Quanzhong, Jiang Yan, Qiu Jianrong
School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, China.
Opt Express. 2013 Jul 29;21(15):18461-8. doi: 10.1364/OE.21.018461.
In this paper, self-organized microgratings are fabricated in SrTiO(3) crystal just by scanning the focus of a tightly-focused linearly-polarized femtosecond laser beam to form a single line. The polarization direction of the laser beam is rotated by a λ/2 waveplate to check the effect of the polarization azimuth on the micrograting morphology. Fourier analyzing of the microscopic images of the microgratings indicates that the polarization plane azimuth of the laser beam does have influence on the microgratings in the aspects of groove orientation and groove spacing. A possible mechanism of polarization dependence is also proposed.
在本文中，通过扫描紧聚焦的线偏振飞秒激光束的焦点以形成单线，在SrTiO₃晶体中制备了自组织微光栅。通过λ/2波片旋转激光束的偏振方向，以检查偏振方位角对微光栅形态的影响。对微光栅微观图像的傅里叶分析表明，激光束的偏振平面方位角在沟槽取向和沟槽间距方面确实对微光栅有影响。还提出了一种偏振依赖性的可能机制。
