Lin Chia-Jen, Li Yu-Tai, Hsieh Cho-Fan, Pan Ru-Pin, Pan Ci-Ling
Department of Electrophysics, National Chiao Tung University, Hsinchu, Taiwan 30010, ROC.
Opt Express. 2008 Mar 3;16(5):2995-3001. doi: 10.1364/oe.16.002995.
This investigation demonstrates the feasibility of a magnetically tunable liquid crystal phase grating for the terahertz wave. The phase grating can be used as a beam splitter. The ratio of the zeroth and first-order diffracted THz-beams (0.3 THz) polarized in a direction perpendicular to that of the grooves of the grating can be tuned from 4:1 to 1:2. When the THz wave is polarized in any other direction, this device can be operated as a polarizing beam splitter.
本研究证明了用于太赫兹波的磁可调液晶相位光栅的可行性。该相位光栅可用作分束器。在垂直于光栅凹槽方向偏振的零阶和一阶衍射太赫兹光束（0.3太赫兹）的比例可从4:1调谐到1:2。当太赫兹波在任何其他方向偏振时，该装置可作为偏振分束器使用。
