Gain measurements of scattering-assisted terahertz quantum cascade lasers
Using terahertz time-domain spectroscopy, the gain of scattering-assisted terahertz quantum cascade lasers is measured. By examining the intersubband gain and absorption over a wide range of bias voltages, we experimentally detect energy anticrossings—revealing information about the mechanism of las...
| Main Authors: | , , , |
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| 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/1721.1/86354 https://orcid.org/0000-0003-1982-4053 https://orcid.org/0000-0001-5848-2389 |
| _version_ | 1826204453637718016 |
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| author | Hu, Qing Reno, John L. Burghoff, David Patrick Chan, Chun Wang Ivan |
| 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 Hu, Qing Reno, John L. Burghoff, David Patrick Chan, Chun Wang Ivan |
| author_sort | Hu, Qing |
| collection | MIT |
| description | Using terahertz time-domain spectroscopy, the gain of scattering-assisted terahertz quantum cascade lasers is measured. By examining the intersubband gain and absorption over a wide range of bias voltages, we experimentally detect energy anticrossings—revealing information about the mechanism of laser action—and compare the resonant-tunneling injection scheme to the scattering-assisted injection scheme. The temperature performance of the gain medium is also measured and discussed, and an additional intersubband transition is identified that contributes to scattering-assisted lasing action at high temperatures. |
| first_indexed | 2024-09-23T12:55:18Z |
| format | Article |
| id | mit-1721.1/86354 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:55:18Z |
| publishDate | 2014 |
| publisher | American Institute of Physics (AIP) |
| record_format | dspace |
| spelling | mit-1721.1/863542022-09-28T10:54:37Z Gain measurements of scattering-assisted terahertz quantum cascade lasers Hu, Qing Reno, John L. Burghoff, David Patrick Chan, Chun Wang Ivan Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology. Research Laboratory of Electronics Burghoff, David Patrick Chan, Chun Wang Ivan Hu, Qing Using terahertz time-domain spectroscopy, the gain of scattering-assisted terahertz quantum cascade lasers is measured. By examining the intersubband gain and absorption over a wide range of bias voltages, we experimentally detect energy anticrossings—revealing information about the mechanism of laser action—and compare the resonant-tunneling injection scheme to the scattering-assisted injection scheme. The temperature performance of the gain medium is also measured and discussed, and an additional intersubband transition is identified that contributes to scattering-assisted lasing action at high temperatures. United States. National Aeronautics and Space Administration National Science Foundation (U.S.) 2014-05-02T13:40:41Z 2014-05-02T13:40:41Z 2012-06 2012-03 Article http://purl.org/eprint/type/JournalArticle 00036951 1077-3118 http://hdl.handle.net/1721.1/86354 Burghoff, David, Chun Wang Ivan Chan, Qing Hu, and John L. Reno. “Gain Measurements of Scattering-Assisted Terahertz Quantum Cascade Lasers.” Appl. Phys. Lett. 100, no. 26 (2012): 261111. © 2012 American Institute of Physics https://orcid.org/0000-0003-1982-4053 https://orcid.org/0000-0001-5848-2389 en_US http://dx.doi.org/10.1063/1.4732518 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 | Hu, Qing Reno, John L. Burghoff, David Patrick Chan, Chun Wang Ivan Gain measurements of scattering-assisted terahertz quantum cascade lasers |
| title | Gain measurements of scattering-assisted terahertz quantum cascade lasers |
| title_full | Gain measurements of scattering-assisted terahertz quantum cascade lasers |
| title_fullStr | Gain measurements of scattering-assisted terahertz quantum cascade lasers |
| title_full_unstemmed | Gain measurements of scattering-assisted terahertz quantum cascade lasers |
| title_short | Gain measurements of scattering-assisted terahertz quantum cascade lasers |
| title_sort | gain measurements of scattering assisted terahertz quantum cascade lasers |
| url | http://hdl.handle.net/1721.1/86354 https://orcid.org/0000-0003-1982-4053 https://orcid.org/0000-0001-5848-2389 |
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