Frequency locking of single-mode 3.5-THz quantum cascade lasers using a gas cell
We 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 el...
| Main Authors: | , , , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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American Institute of Physics (AIP)
2014
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| Online Access: | http://hdl.handle.net/1721.1/86350 https://orcid.org/0000-0003-1982-4053 |
| _version_ | 1811094418685427712 |
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| author | Ren, Y. Hovenier, J. N. Cui, M. Hayton, D. J. Gao, J. R. Klapwijk, T. M. Shi, S. C. Reno, J. L. Kao, Tsung-Yu Hu, Qing |
| author2 | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science |
| author_facet | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Ren, Y. Hovenier, J. N. Cui, M. Hayton, D. J. Gao, J. R. Klapwijk, T. M. Shi, S. C. Reno, J. L. Kao, Tsung-Yu Hu, Qing |
| author_sort | Ren, Y. |
| collection | MIT |
| description | We 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. |
| first_indexed | 2024-09-23T15:59:45Z |
| format | Article |
| id | mit-1721.1/86350 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:59:45Z |
| publishDate | 2014 |
| publisher | American Institute of Physics (AIP) |
| record_format | dspace |
| spelling | mit-1721.1/863502022-10-02T05:36:14Z Frequency locking of single-mode 3.5-THz quantum cascade lasers using a gas cell Ren, Y. Hovenier, J. N. Cui, M. Hayton, D. J. Gao, J. R. Klapwijk, T. M. Shi, S. C. Reno, J. L. Kao, Tsung-Yu Hu, Qing Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Kao, Tsung-Yu Hu, Qing We 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. United States. National Aeronautics and Space Administration National Science Foundation (U.S.) 2014-05-01T19:56:11Z 2014-05-01T19:56:11Z 2012-01 2011-11 Article http://purl.org/eprint/type/JournalArticle 00036951 1077-3118 http://hdl.handle.net/1721.1/86350 Ren, Y., J. N. Hovenier, M. Cui, D. J. Hayton, J. R. Gao, T. M. Klapwijk, S. C. Shi, T.-Y. Kao, Q. Hu, and J. L. Reno. “Frequency Locking of Single-Mode 3.5-THz Quantum Cascade Lasers Using a Gas Cell.” Appl. Phys. Lett. 100, no. 4 (2012): 041111. © 2012 American Institute of Physics https://orcid.org/0000-0003-1982-4053 en_US http://dx.doi.org/10.1063/1.3679620 Applied Physics Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Institute of Physics (AIP) MIT web domain |
| spellingShingle | Ren, Y. Hovenier, J. N. Cui, M. Hayton, D. J. Gao, J. R. Klapwijk, T. M. Shi, S. C. Reno, J. L. Kao, Tsung-Yu Hu, Qing Frequency locking of single-mode 3.5-THz quantum cascade lasers using a gas cell |
| title | Frequency locking of single-mode 3.5-THz quantum cascade lasers using a gas cell |
| title_full | Frequency locking of single-mode 3.5-THz quantum cascade lasers using a gas cell |
| title_fullStr | Frequency locking of single-mode 3.5-THz quantum cascade lasers using a gas cell |
| title_full_unstemmed | Frequency locking of single-mode 3.5-THz quantum cascade lasers using a gas cell |
| title_short | Frequency locking of single-mode 3.5-THz quantum cascade lasers using a gas cell |
| title_sort | frequency locking of single mode 3 5 thz quantum cascade lasers using a gas cell |
| url | http://hdl.handle.net/1721.1/86350 https://orcid.org/0000-0003-1982-4053 |
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