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Amplitude stabilization and active control of a terahertz quantum cascade laser with a graphene loaded split-ring-resonator array
Wei, B.1; Kindness, S. J.1; Almond, N. W.1; Wallis, R.1; Wu, Y.1; Ren, Y.2,3; Shi, S. C.2,3; Braeuninger-Weimer, P.4; Hofmann, S.4; Beere, H. E.1; Ritchie, D. A.1; Degl'lnnocenti, R.5
2018-05-14
Source PublicationAPPLIED PHYSICS LETTERS
ISSN0003-6951
Volume112Issue:20Pages:4
Corresponding AuthorWei, B.(bw373@cam.ac.uk)
AbstractWe demonstrate the amplitude stabilization of a 2.85 THz quantum cascade laser with a graphene loaded split-ring-resonator array acting as an external amplitude modulator. The transmittance of the modulator can be actively changed by modifying the graphene conductivity via electrostatic back-gating. The modulator operates at room temperature and is capable of actively modulating the quantum cascade laser power level and thus stabilizing the power output via a proportional-integral-derivative feedback control loop. The stability was enhanced by more than 10 times through actively tuning the modulation. Furthermore, this approach can be used to externally control the laser power with a high level of stability. Published by AIP Publishing.
DOI10.1063/1.5027687
Indexed BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Applied
WOS IDWOS:000432553900002
PublisherAMER INST PHYSICS
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/21998
Collection中国科学院紫金山天文台
Corresponding AuthorWei, B.
Affiliation1.Univ Cambridge, Cavendish Lab, JJ Thomson Ave, Cambridge CB3 0HE, England
2.Chinese Acad Sci, Purple Mt Observ, 8 Yuanhua Rd, Nanjing 210034, Jiangsu, Peoples R China
3.Chinese Acad Sci, Key Lab Radio Astron, 8 Yuanhua Rd, Nanjing 210034, Jiangsu, Peoples R China
4.Univ Cambridge, Dept Engn, 9 JJ Thomson Ave, Cambridge CB3 0FA, England
5.Univ Lancaster, Dept Engn, Engn Bldg, Lancaster LA1 4YW, England
Recommended Citation
GB/T 7714
Wei, B.,Kindness, S. J.,Almond, N. W.,et al. Amplitude stabilization and active control of a terahertz quantum cascade laser with a graphene loaded split-ring-resonator array[J]. APPLIED PHYSICS LETTERS,2018,112(20):4.
APA Wei, B..,Kindness, S. J..,Almond, N. W..,Wallis, R..,Wu, Y..,...&Degl'lnnocenti, R..(2018).Amplitude stabilization and active control of a terahertz quantum cascade laser with a graphene loaded split-ring-resonator array.APPLIED PHYSICS LETTERS,112(20),4.
MLA Wei, B.,et al."Amplitude stabilization and active control of a terahertz quantum cascade laser with a graphene loaded split-ring-resonator array".APPLIED PHYSICS LETTERS 112.20(2018):4.
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