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dc.contributor.authorChao, Ru-Pinen_US
dc.contributor.authorPan, Ci-Lingen_US
dc.contributor.authorChen, Chao-Yuanen_US
dc.date.accessioned2014-12-16T06:15:51Z-
dc.date.available2014-12-16T06:15:51Z-
dc.date.issued2009-01-01en_US
dc.identifier.govdocG02F001/137zh_TW
dc.identifier.urihttp://hdl.handle.net/11536/105557-
dc.description.abstractThe present invention provides a tunable terahertz (THz) wavelength selector device, which includes a fixed phase retarder, a tunable phase retarder and a pair of linear polarizers to form a unit. The fixed phase retarder and tunable phase retarder basically utilizes liquid crystals to provide phase retardation, moreover, utilizing birefringence phenomenon possessed by liquid crystals can provide adequate phase retardation. The fixed phase retarder utilizes horizontal orientation of liquid crystal cell to provide fixed phase retardation, while the tunable phase retarder however utilizes homeotropic liquid crystal cell and a rotatable magnet to provide a tunable phase retardation, wherein the tunable phase retarder can provide the positive or negative phase retardation relative to the fixed phase retarder, based on the direction of the magnet's rotating axes and totally use the entire tunable range into adjusting frequencies which can pass through. Besides, the present invention can also serially connect multiple units described above so as to achieve a narrow enough band-pass bandwidth.zh_TW
dc.language.isozh_TWen_US
dc.titleTUNABLE TERAHERTZ WAVELENGTH SELECTOR DEVICE USING MAGNETICALLY CONTROLLED BIREFRINGENCE OF LIQUID CRYSTALSzh_TW
dc.typePatentsen_US
dc.citation.patentcountryUSAzh_TW
dc.citation.patentnumber20090002581zh_TW
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