Device and method for modulating transmission of terahertz waves

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dc.contributor.assigneeRice Universityeng
dc.contributor.publisherUnited States Patent and Trademark Officeeng
dc.creatorXu, Quinfaneng
dc.creatorShu, Jieeng
dc.creatorMittleman, Daniel M.eng
dc.creatorQiu, Ciyuaneng
dc.date.accessioned2015-09-09T20:12:36Z
dc.date.available2015-09-09T20:12:36Z
dc.date.filed2012-05-03
dc.date.issued2015-08-11
dc.description.abstractA device for modulating terahertz waves includes a metal layer (703) including a continuous metal portion (705) and island metal portions (707). The metal portions (705, 707) are separated by apertures (709). The device further includes a semiconductor layer (715) affixed to a bottom surface of the metal layer (703). The semiconductor layer (715) includes carrier regions (717) located below the apertures (709). The transmission of terahertz waves through the apertures (709) is modulated by changing a voltage applied across the aperture via voltage source (715). By injecting free carriers into carrier regions (717) due to a change of the voltage an extraordinary terahertz transmission effect of the metal layer (703) can be switched off. A small increase in the free-carrier absorption is significantly enhanced by the Fabry-Perot resonance, resulting in a substantial decrease in transmission. The disclosed ring aperture terahertz modulator allows for electrical control of the carrier density only in the area underneath the aperture. This design minimizes the power consumption and maximizes the operation speed.eng
dc.digitization.specificationsThis patent information was downloaded from the US Patent and Trademark website (http://www.uspto.gov/) as image-PDFs. The PDFs were OCRed for access purposeseng
dc.format.extent29eng
dc.identifier.citationXu, Quinfan, Shu, Jie, Mittleman, Daniel M. and Qiu, Ciyuan, "Device and method for modulating transmission of terahertz waves." Patent US9106342. issued 2015-08-11. Retrieved from <a href="https://hdl.handle.net/1911/81637">https://hdl.handle.net/1911/81637</a>.*
dc.identifier.patentIDUS9106342eng
dc.identifier.urihttps://hdl.handle.net/1911/81637
dc.language.isoengeng
dc.titleDevice and method for modulating transmission of terahertz waveseng
dc.typeUtility patenteng
dc.type.dcmiTexteng
dc.type.genrepatentseng
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