PMO OpenIR
External amplitude and frequency modulation of a terahertz quantum cascade laser using metamaterial/graphene devices
Kindness, S. J.1; Jessop, D. S.1; Wei, B.1; Wallis, R.1; Kamboj, V. S.1; Xiao, L.1; Ren, Y.1,3; Braeuninger-Weimer, P.2; Aria, A. I.2,4; Hofmann, S.2; Beere, H. E.1; Ritchie, D. A.1; Degl'Innocenti, R.1
2017-08-09
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume7Pages:10
Corresponding AuthorKindness, S. J.(sjk80@cam.ac.uk)
AbstractActive control of the amplitude and frequency of terahertz sources is an essential prerequisite for exploiting a myriad of terahertz applications in imaging, spectroscopy, and communications. Here we present a optoelectronic, external modulation technique applied to a terahertz quantum cascade laser which holds the promise of addressing a number of important challenges in this research area. A hybrid metamaterial/graphene device is implemented into an external cavity set-up allowing for optoelectronic tuning of feedback into a quantum cascade laser. We demonstrate powerful, all-electronic, control over the amplitude and frequency of the laser output. Full laser switching is performed by electrostatic gating of the metamaterial/graphene device, demonstrating a modulation depth of 100%. External control of the emission spectrum is also achieved, highlighting the flexibility of this feedback method. By taking advantage of the frequency dispersive reflectivity of the metamaterial array, different modes of the QCL output are selectively suppressed using lithographic tuning and single mode operation of the multi-mode laser is enforced. Side mode suppression is electrically modulated from similar to 6 dB to similar to 21 dB, demonstrating active, optoelectronic modulation of the laser frequency content between multi-mode and single mode operation.
DOI10.1038/s41598-017-07943-w
WOS KeywordLOADED PLASMONIC ANTENNAS ; SPLIT-RING RESONATORS ; ACTIVE-MODE LOCKING ; GRAPHENE ; CAVITY ; WAVE
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000407294200014
PublisherNATURE PUBLISHING GROUP
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/22620
Collection中国科学院紫金山天文台
Corresponding AuthorKindness, S. J.
Affiliation1.Univ Cambridge, Cavendish Lab, JJ Thomson Ave, Cambridge CB3 0HE, England
2.Univ Cambridge, Dept Engn, 9 JJ Thomson Ave, Cambridge CB3 0FA, England
3.Chinese Acad Sci, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
4.Cranfield Univ, Sch Aerosp Transport & Mfg, Coll Rd, Cranfield MK43 0AL, Beds, England
Recommended Citation
GB/T 7714
Kindness, S. J.,Jessop, D. S.,Wei, B.,et al. External amplitude and frequency modulation of a terahertz quantum cascade laser using metamaterial/graphene devices[J]. SCIENTIFIC REPORTS,2017,7:10.
APA Kindness, S. J..,Jessop, D. S..,Wei, B..,Wallis, R..,Kamboj, V. S..,...&Degl'Innocenti, R..(2017).External amplitude and frequency modulation of a terahertz quantum cascade laser using metamaterial/graphene devices.SCIENTIFIC REPORTS,7,10.
MLA Kindness, S. J.,et al."External amplitude and frequency modulation of a terahertz quantum cascade laser using metamaterial/graphene devices".SCIENTIFIC REPORTS 7(2017):10.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Kindness, S. J.]'s Articles
[Jessop, D. S.]'s Articles
[Wei, B.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Kindness, S. J.]'s Articles
[Jessop, D. S.]'s Articles
[Wei, B.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Kindness, S. J.]'s Articles
[Jessop, D. S.]'s Articles
[Wei, B.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.