Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/43298
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dc.contributorDepartment of Applied Physics-
dc.creatorLiang, G-
dc.creatorHu, X-
dc.creatorYu, X-
dc.creatorShen, Y-
dc.creatorLi, LH-
dc.creatorDavies, AG-
dc.creatorLinfield, EH-
dc.creatorLiang, HK-
dc.creatorZhang, Y-
dc.creatorYu, SF-
dc.creatorWang, QJ-
dc.date.accessioned2016-06-07T06:15:46Z-
dc.date.available2016-06-07T06:15:46Z-
dc.identifier.issn2330-4022en_US
dc.identifier.urihttp://hdl.handle.net/10397/43298-
dc.language.isoenen_US
dc.publisherAmerican Chemical Societyen_US
dc.rights© 2015 American Chemical Society. This is an open access article published under a Creative Commons Attribution 4.0 (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.en_US
dc.rightsThe following publication Liang, G., Hu, X., Yu, X., Shen, Y., Li, L. H., Davies, A. G., ... & Wang, Q. J. (2015). Integrated terahertz graphene modulator with 100% modulation depth. ACS photonics, 2(11), 1559-1566 is available at https://doi.org/10.1021/acsphotonics.5b00317en_US
dc.subject100 percent modulation depthen_US
dc.subjectGrapheneen_US
dc.subjectIntegrated photonicsen_US
dc.subjectQuantum cascade laseren_US
dc.subjectTerahertz modulatoren_US
dc.titleIntegrated terahertz graphene modulator with 100% modulation depthen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage1559en_US
dc.identifier.epage1566en_US
dc.identifier.volume2en_US
dc.identifier.issue11en_US
dc.identifier.doi10.1021/acsphotonics.5b00317en_US
dcterms.abstractTerahertz (THz) frequency technology has many potential applications in nondestructive imaging, spectroscopic sensing, and high-bit-rate free-space communications, with an optical modulator being a key component. However, it has proved challenging to achieve high-speed modulation with a high modulation depth across a broad bandwidth of THz frequencies. Here, we demonstrate that a monolithically integrated graphene modulator can efficiently modulate the light intensity of the THz radiation from a THz quantum cascade laser with a 100% modulation depth for certain region of the pumping current, as a result of the strongly enhanced interaction between the laser field and the graphene enabled by this integration scheme. Moreover, the small area of the resulting device in comparison to existing THz modulators enables a faster modulation speed, greater than 100 MHz, which can be further improved through optimized designs of the laser cavity and modulator architectures. Furthermore, as the graphene absorption spectrum is broadband in nature, our integration scheme can be readily scaled to other wavelength regions, such as the mid-infrared, and applied to a broad range of other optoelectronic devices.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationACS photonics, 2015, v. 2, no. 11, p. 1559-1566-
dcterms.isPartOfACS photonics-
dcterms.issued2015-
dc.identifier.scopus2-s2.0-84947741421-
dc.description.validate201902_a bcmaen_US
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumberOA_IR/PIRAen_US
dc.description.pubStatusPublisheden_US
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