Light-induced terahertz optical activity
Light-induced terahertz optical activity
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DOI：
10.1364/ol.34.003000
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发表时间：
2009-10-01
期刊：
影响因子：
3.6
通讯作者：
Kuwata-Gonokami, Makoto
中科院分区：
文献类型：
--
作者：
Kanda, Natsuki;Konishi, Kuniaki;Kuwata-Gonokami, Makoto
我们提出并证明了一种简单的方法，诱导太赫兹（THz）区域的光致激发载流子在半导体衬底与金属二维手性掩模，没有光激发不显示光学活性。光生载流子和金属掩膜的结合诱导的三维手性导致了旋光性。通过这种简单的方法，我们可以开发出适用于生物，化学和材料科学的太赫兹偏振调制技术。(C)2009年美国光学学会
We propose and demonstrate a simple method to induce optical activity in the terahertz (THz) region using photoexcited carriers in a semiconductor substrate with metal two-dimensional chiral masks, which does not show optical activity without photoexcitation. The three-dimensional chirality induced by the combination of photocarriers and metal mask gives rise to the optical activity. With this simple method, we can develop THz polarization modulation techniques applicable for biology, chemistry, and material sciences. (C) 2009 Optical Society of America