| dc.contributor.author | Kao, Tsung-Yu | |
| dc.contributor.author | Hu, Qing | |
| dc.contributor.author | Reno, John L. | |
| dc.date.accessioned | 2014-05-01T13:00:48Z | |
| dc.date.available | 2014-05-01T13:00:48Z | |
| dc.date.issued | 2010-03 | |
| dc.date.submitted | 2010-01 | |
| dc.identifier.issn | 00036951 | |
| dc.identifier.issn | 1077-3118 | |
| dc.identifier.uri | http://hdl.handle.net/1721.1/86312 | |
| dc.description.abstract | We report the demonstration of phase-locked arrays of surface-emitting distributed-feedback (DFB) terahertz quantum-cascade lasers with single-mode operations. Carefully designed “phase sector” locks several surface-emitting DFB laser ridges in-phase, creating tighter beam-patterns along the phased-array direction with full width at half maximum (FWHM) ≈ 10°. In addition, the phase sector can be individually biased to provide a mechanism of frequency tuning through gain-induced optical index change, without significantly affecting the output power levels. A tuning range of 1.5 GHz around 3.9 THz was achieved. This fine tunability could be utilized to frequency- or phase-lock the DFB array to an external reference. | en_US |
| dc.description.sponsorship | United States. Air Force Office of Scientific Research | en_US |
| dc.description.sponsorship | United States. National Aeronautics and Space Administration | en_US |
| dc.description.sponsorship | National Science Foundation (U.S.) | en_US |
| dc.language.iso | en_US | |
| dc.publisher | American Institute of Physics (AIP) | en_US |
| dc.relation.isversionof | http://dx.doi.org/10.1063/1.3358134 | en_US |
| dc.rights | 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. | en_US |
| dc.source | MIT web domain | en_US |
| dc.title | Phase-locked arrays of surface-emitting terahertz quantum-cascade lasers | en_US |
| dc.type | Article | en_US |
| dc.identifier.citation | Kao, Tsung-Yu, Qing Hu, and John L. Reno. “Phase-Locked Arrays of Surface-Emitting Terahertz Quantum-Cascade Lasers.” Appl. Phys. Lett. 96, no. 10 (2010): 101106. © 2010 American Institute of Physics | en_US |
| dc.contributor.department | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science | en_US |
| dc.contributor.department | Massachusetts Institute of Technology. Research Laboratory of Electronics | en_US |
| dc.contributor.mitauthor | Kao, Tsung-Yu | en_US |
| dc.contributor.mitauthor | Hu, Qing | en_US |
| dc.relation.journal | Applied Physics Letters | en_US |
| dc.eprint.version | Final published version | en_US |
| dc.type.uri | http://purl.org/eprint/type/JournalArticle | en_US |
| eprint.status | http://purl.org/eprint/status/PeerReviewed | en_US |
| dspace.orderedauthors | Kao, Tsung-Yu; Hu, Qing; Reno, John L. | en_US |
| dc.identifier.orcid | https://orcid.org/0000-0003-1982-4053 | |
| mit.license | PUBLISHER_POLICY | en_US |
| mit.metadata.status | Complete | |
