dc.contributor.author | Belkin, Mikhail A. | |
dc.contributor.author | Capasso, Federico | |
dc.contributor.author | Belyanin, Alexey | |
dc.contributor.author | Sivco, Deborah L. | |
dc.contributor.author | Cho, Alfred Y. | |
dc.contributor.author | Oakley, Douglas C. | |
dc.contributor.author | Vineis, Christopher J. | |
dc.contributor.author | Turner, George W. | |
dc.date.accessioned | 2019-09-17T13:29:44Z | |
dc.date.issued | 2007 | |
dc.identifier.citation | Belkin, Mikhail A., Federico Capasso, Alexey Belyanin, Deborah L. Sivco, Alfred Y. Cho, Douglas C. Oakley, Christopher J. Vineis, and George W. Turner. 2007. “Terahertz Quantum-Cascade-Laser Source Based on Intracavity Difference-Frequency Generation.” Nature Photonics 1 (5): 288–92. https://doi.org/10.1038/nphoton.2007.70. | |
dc.identifier.issn | 1749-4885 | |
dc.identifier.issn | 1749-4893 | |
dc.identifier.uri | http://nrs.harvard.edu/urn-3:HUL.InstRepos:41371549 | * |
dc.description.abstract | The terahertz spectral range (lambda = 30-300 mu m) has long been devoid of compact, electrically pumped, room-temperature semiconductor sources(1-4). Despite recent progress with terahertz quantum cascade lasers(2-4), existing devices still require cryogenic cooling. An alternative way to produce terahertz radiation is frequency down-conversion in a nonlinear optical crystal using infrared or visible pump lasers(5-7). This approach offers broad spectral tunability and does work at room temperature; however, it requires powerful laser pumps and a more complicated optical set-up, resulting in bulky and unwieldy sources. Here we demonstrate a monolithically integrated device designed to combine the advantages of electrically pumped semiconductor lasers and nonlinear optical sources. Our device is a dual-wavelength quantum cascade laser(8) with the active region engineered to possess giant second-order nonlinear susceptibility associated with intersubband transitions in coupled quantum wells. The laser operates at lambda(1) = 7.6 mu m and lambda(2) = 8.7 mu m, and produces terahertz output at lambda = 60 mu m through intracavity difference-frequency generation. | |
dc.language.iso | en_US | |
dc.publisher | Nature Research | |
dash.license | META_ONLY | |
dc.title | Terahertz quantum-cascade-laser source based on intracavity difference-frequency generation | |
dc.type | Journal Article | |
dc.description.version | Version of Record | |
dc.relation.journal | Nature Photonics | |
dash.depositing.author | Capasso, Federico::c84ca12d0f20adc982c7c314bebd7c9e::600 | |
dc.date.available | 2019-09-17T13:29:44Z | |
dash.workflow.comments | 1Science Serial ID 68552 | |
dc.identifier.doi | 10.1038/nphoton.2007.70 | |
dash.source.volume | 1;5 | |
dash.source.page | 288-292 | |