Tunable terahertz quantum cascade lasers with external gratings
We demonstrate a frequency tunable external cavity terahertz quantum cascade laser using an abutted antireflection-coated silicon lens to reduce facet reflection and as a beam-forming element, with an external grating providing frequency selective optical feedback. Angle tuning of the grating allows...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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Optical Society of America
2014
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| Online Access: | http://hdl.handle.net/1721.1/86361 https://orcid.org/0000-0003-1982-4053 |
| _version_ | 1811098462532403200 |
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| author | Lee, Alan Williams, Benjamin S. Kumar, Sushil Hu, Qing Reno, John L. |
| 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 Lee, Alan Williams, Benjamin S. Kumar, Sushil Hu, Qing Reno, John L. |
| author_sort | Lee, Alan |
| collection | MIT |
| description | We demonstrate a frequency tunable external cavity terahertz quantum cascade laser using an abutted antireflection-coated silicon lens to reduce facet reflection and as a beam-forming element, with an external grating providing frequency selective optical feedback. Angle tuning of the grating allows a single longitudinal mode of the laser ridge to be selected, resulting in discontinuous tuning over a 165 GHz range around a center frequency of 4.4 THz. Another device exhibited 145 GHz of total tuning with 9 GHz of continuous tuning near the longitudinal modes of the laser. |
| first_indexed | 2024-09-23T17:14:58Z |
| format | Article |
| id | mit-1721.1/86361 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T17:14:58Z |
| publishDate | 2014 |
| publisher | Optical Society of America |
| record_format | dspace |
| spelling | mit-1721.1/863612022-10-03T11:23:20Z Tunable terahertz quantum cascade lasers with external gratings Lee, Alan Williams, Benjamin S. Kumar, Sushil Hu, Qing Reno, John L. Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology. Research Laboratory of Electronics Lee, Alan Kumar, Sushil Hu, Qing Williams, Benjamin S. We demonstrate a frequency tunable external cavity terahertz quantum cascade laser using an abutted antireflection-coated silicon lens to reduce facet reflection and as a beam-forming element, with an external grating providing frequency selective optical feedback. Angle tuning of the grating allows a single longitudinal mode of the laser ridge to be selected, resulting in discontinuous tuning over a 165 GHz range around a center frequency of 4.4 THz. Another device exhibited 145 GHz of total tuning with 9 GHz of continuous tuning near the longitudinal modes of the laser. United States. Air Force Office of Scientific Research United States. National Aeronautics and Space Administration National Science Foundation (U.S.) 2014-05-02T14:40:21Z 2014-05-02T14:40:21Z 2010-03 2010-01 Article http://purl.org/eprint/type/JournalArticle 0146-9592 1539-4794 http://hdl.handle.net/1721.1/86361 Lee, Alan Wei Min, Benjamin S. Williams, Sushil Kumar, Qing Hu, and John L. Reno. “Tunable Terahertz Quantum Cascade Lasers with External Gratings.” Optics Letters 35, no. 7 (April 1, 2010): 910. © 2010 Optical Society of America https://orcid.org/0000-0003-1982-4053 en_US http://dx.doi.org/10.1364/OL.35.000910 Optics 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 Optical Society of America Other univ. web domain |
| spellingShingle | Lee, Alan Williams, Benjamin S. Kumar, Sushil Hu, Qing Reno, John L. Tunable terahertz quantum cascade lasers with external gratings |
| title | Tunable terahertz quantum cascade lasers with external gratings |
| title_full | Tunable terahertz quantum cascade lasers with external gratings |
| title_fullStr | Tunable terahertz quantum cascade lasers with external gratings |
| title_full_unstemmed | Tunable terahertz quantum cascade lasers with external gratings |
| title_short | Tunable terahertz quantum cascade lasers with external gratings |
| title_sort | tunable terahertz quantum cascade lasers with external gratings |
| url | http://hdl.handle.net/1721.1/86361 https://orcid.org/0000-0003-1982-4053 |
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