Perfectly phase-matched third-order distributed feedback terahertz quantum-cascade lasers
We report a novel laser cavity design in third-order distributed feedback (DFB) terahertz quantum-cascade lasers based on a perfectly phase-matching technique. This approach substantially increases the usable length of the third-order DFB laser and leads to narrow beam patterns. Single frequency emi...
| 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/1721.1/86373 https://orcid.org/0000-0003-1982-4053 |
| _version_ | 1811096490252173312 |
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| author | Kao, Tsung-Yu 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 Kao, Tsung-Yu Hu, Qing Reno, John L. |
| author_sort | Kao, Tsung-Yu |
| collection | MIT |
| description | We report a novel laser cavity design in third-order distributed feedback (DFB) terahertz quantum-cascade lasers based on a perfectly phase-matching technique. This approach substantially increases the usable length of the third-order DFB laser and leads to narrow beam patterns. Single frequency emissions from 151 apertures (5.6 mm long device) are coherently added up to form a narrow beam with (FWHM ≈ 6 × 11°) divergence. A similar device with 40 apertures shows more than 5 mW of optical power with slope efficiency ~ 140 mW/A at 10 K pulsed operation. |
| first_indexed | 2024-09-23T16:44:30Z |
| format | Article |
| id | mit-1721.1/86373 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:44:30Z |
| publishDate | 2014 |
| publisher | Optical Society of America |
| record_format | dspace |
| spelling | mit-1721.1/863732022-09-29T21:08:24Z Perfectly phase-matched third-order distributed feedback terahertz quantum-cascade lasers Kao, Tsung-Yu Hu, Qing Reno, John L. Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology. Research Laboratory of Electronics Kao, Tsung-Yu Hu, Qing We report a novel laser cavity design in third-order distributed feedback (DFB) terahertz quantum-cascade lasers based on a perfectly phase-matching technique. This approach substantially increases the usable length of the third-order DFB laser and leads to narrow beam patterns. Single frequency emissions from 151 apertures (5.6 mm long device) are coherently added up to form a narrow beam with (FWHM ≈ 6 × 11°) divergence. A similar device with 40 apertures shows more than 5 mW of optical power with slope efficiency ~ 140 mW/A at 10 K pulsed operation. United States. National Aeronautics and Space Administration National Science Foundation (U.S.) 2014-05-02T16:49:51Z 2014-05-02T16:49:51Z 2012-05 2012-03 Article http://purl.org/eprint/type/JournalArticle 0146-9592 1539-4794 http://hdl.handle.net/1721.1/86373 Kao, Tsung-Yu, Qing Hu, and John L. Reno. “Perfectly Phase-Matched Third-Order Distributed Feedback Terahertz Quantum-Cascade Lasers.” Optics Letters 37, no. 11 (June 1, 2012): 2070. © 2012 Optical Society of America https://orcid.org/0000-0003-1982-4053 en_US http://dx.doi.org/10.1364/OL.37.002070 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 MIT web domain |
| spellingShingle | Kao, Tsung-Yu Hu, Qing Reno, John L. Perfectly phase-matched third-order distributed feedback terahertz quantum-cascade lasers |
| title | Perfectly phase-matched third-order distributed feedback terahertz quantum-cascade lasers |
| title_full | Perfectly phase-matched third-order distributed feedback terahertz quantum-cascade lasers |
| title_fullStr | Perfectly phase-matched third-order distributed feedback terahertz quantum-cascade lasers |
| title_full_unstemmed | Perfectly phase-matched third-order distributed feedback terahertz quantum-cascade lasers |
| title_short | Perfectly phase-matched third-order distributed feedback terahertz quantum-cascade lasers |
| title_sort | perfectly phase matched third order distributed feedback terahertz quantum cascade lasers |
| url | http://hdl.handle.net/1721.1/86373 https://orcid.org/0000-0003-1982-4053 |
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