摘要
利用飞秒微加工和磁控溅射技术,在熔融石英衬底上设计并制作了不同结构的金属线栅,通过太赫兹时域光谱系统研究了线栅结构对太赫兹波偏振透射特性的影响,并用有限时域差分法对实验结果进行了模拟验证.分析了影响S和P两个偏振方向太赫兹波透射的物理机制.为制作太赫兹波段偏振器件提供了有益的参考.
Metallic wire gratings in terahertz frequency were designed and fabricated by femtosecond micromaehing and sputtering technique. The polarized transmission spectra of the gratings were characterized by terahertz （THz） time domain spectroscopy. The theoretical simulations based on FDTD method show a good agreement with experimental results. The physical origin of impacting transmittance in S and P polarization was analyzed. The results obtained from this work provide a useful referrence for the production of THz polarization devices.
出处
《红外与毫米波学报》
SCIE
EI
CAS
CSCD
北大核心
2010年第6期452-456,共5页
Journal of Infrared and Millimeter Waves
基金
国家自然科学基金(10774099)
上海科委应用基础研究计划(09530501100)
上海市高等学校特聘教授(东方学者)岗位计划
中科院红外物理国家重点实验室资助
关键词
金属线栅
太赫兹
飞秒激光
偏振度
metallic wire grating
terahertz
femtosecond laser pulse
degree of polarization
