偏振调节的三光束干涉制备可调谐表面周期结构  

Fabrication of Tunable Surface Periodic Structures by Polarization-Controlled Three-Beam Interference

作　　者：贾鑫[1] 

机构地区：[1]上海电机学院数理教学部,上海201306

出　　处：《上海电机学院学报》2014年第4期244-248,共5页Journal of Shanghai Dianji University

基　　金：国家自然科学基金项目资助(11104178);上海市教育委员会科研创新项目资助(14YZ156);上海高校选拔培养优秀青年教师科研专项基金项目资助(shdj006);上海电机学院基础学科资助(12XKJC01)

摘　　要：按照多光束干涉理论,计算模拟了激光偏振变化对干涉光强分布的影响。通过调节三光束的偏振组合,得到了不同形状的干涉光强分布图样。利用偏振调节的飞秒激光三光束干涉烧蚀ZnO晶体,在样品表面制备了各种微米空腔、微米凸起等形状各异的二维周期结构。实验结构与理论模拟结果吻合良好。偏振调节的三光束干涉技术能够有效地调谐表面结构形状,极大地丰富了激光干涉技术的多样性。According to the theory of multi-beam interference,simulation of the influence of polarization on intensity distribution is carried out.By controlling the polarization combinations of the three interfering beams,various patterns of intensity distribution are obtained.Various two-dimensional periodic structures of micro cavities and micro bumps are produced on the ZnO surface by the polarization-controlled interference of three femtosecond laser beams.The experimental and theoretical results are in good agreement.The polarization-controlled three-beam interference is an effective method to produce tunable surface structures,which can improve diversity of the laser interference.

关 键 词：三光束干涉 偏振调节 表面周期结构 

分 类 号：O436.3[机械工程—光学工程]