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Frequency locking of single-mode 3.5-THz quantum cascade lasers using a gas cell
Ren, Y.1,2,3; Hovenier, J. N.1; Cui, M.4; Hayton, D. J.4; Gao, J. R.1,4; Klapwijk, T. M.1; Shi, S. C.2; Kao, T. -Y.5; Hu, Q.5; Reno, J. L.6
2012-01-23
Source PublicationAPPLIED PHYSICS LETTERS
ISSN0003-6951
Volume100Issue:4Pages:041111
AbstractWe report frequency locking of two 3.5-THz third-order distributed feedback (DFB) quantum cascade lasers (QCLs) by using methanol molecular absorption lines, a proportional-integral-derivative controller, and a NbN bolometer. We show that the free-running linewidths of the QCLs are dependent on the electrical and temperature tuning coefficients. For both lasers, the frequency locking induces a similar linewidth reduction factor, whereby the narrowest locked linewidth is below 18 kHz with a Gaussian-like shape. The linewidth reduction factor and the ultimate linewidth correspond to the measured frequency noise power spectral density. (C) 2012 American Institute of Physics. [doi:10.1063/1.3679620]
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1063/1.3679620
WOS KeywordPHASE-LOCKING ; LINEWIDTH
Indexed BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Applied
WOS IDWOS:000300064500011
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/7968
Collection毫米波和亚毫米波技术实验室
Affiliation1.Delft Univ Technol, Kavli Inst NanoSci, NL-2628 CJ Delft, Netherlands
2.Chinese Acad Sci, PMO, Nanjing 210008, Jiangsu, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
4.SRON Netherlands Inst Space Res, NL-3584 CA Utrecht, Netherlands
5.MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA
6.Sandia Natl Labs, Ctr Integrated Nanotechnol, Albuquerque, NM 87185 USA
Recommended Citation
GB/T 7714
Ren, Y.,Hovenier, J. N.,Cui, M.,et al. Frequency locking of single-mode 3.5-THz quantum cascade lasers using a gas cell[J]. APPLIED PHYSICS LETTERS,2012,100(4):041111.
APA Ren, Y..,Hovenier, J. N..,Cui, M..,Hayton, D. J..,Gao, J. R..,...&Reno, J. L..(2012).Frequency locking of single-mode 3.5-THz quantum cascade lasers using a gas cell.APPLIED PHYSICS LETTERS,100(4),041111.
MLA Ren, Y.,et al."Frequency locking of single-mode 3.5-THz quantum cascade lasers using a gas cell".APPLIED PHYSICS LETTERS 100.4(2012):041111.
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