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dc.contributor.authorBelkin, Mikhail A.
dc.contributor.authorWang, Qi Jie
dc.contributor.authorPflügl, Christian
dc.contributor.authorBelyanin, Alexey
dc.contributor.authorKhanna, Suraj P.
dc.contributor.authorDavies, Alexander Giles
dc.contributor.authorLinfield, Edmund Harold
dc.contributor.authorCapasso, Federico
dc.date.accessioned2010-02-12T15:22:51Z
dc.date.issued2009
dc.identifier.citationBelkin, Mikhail A., Qi Jie Wang, Christian Pflügl, Alexey Belyanin, Suraj P. Khanna, Alexander Giles Davies, Edmund Harold Linfield, and Federico Capasso. 2009. High-temperature operation of terahertz quantum cascade laser sources. IEEE Journal of Selected Topics in Quantum Electronics 15(3): 952-967.en_US
dc.identifier.issn1077-260Xen_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:3634152
dc.description.abstractTerahertz (THz) quantum cascade lasers (QCLs) are currently the most advanced electrically pumped semiconductor lasers in the spectral range 1-5 THz. However, their operation at room temperature is still an unresolved challenge. In this paper, we discuss our efforts to improve the temperature performance of these devices. In particular, we present THz QCLs that approach thermoelectric cooled operation and discuss factors that limit their high-temperature performance. We also discuss a different type of THz QCL source that produces coherent THz radiation without population inversion across the THz transition. These devices are based on intracavity difference-frequency generation in dual-wavelength mid-IR QCLs, and can now provide microwatt levels of coherent THz radiation up to room temperature. We discuss how the output power of these devices can be further improved to produce milliwatts of THz radiation at room temperature.en_US
dc.description.sponsorshipEngineering and Applied Sciencesen_US
dc.language.isoen_USen_US
dc.publisherInstitute of Electrical and Electronics Engineersen_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/JSTQE.2009.2013183en_US
dc.relation.hasversionhttp://www.people.seas.harvard.edu/capasso/publications/Belkin_IEEE_STQE_15_952_2009.pdf
dash.licenseMETA_ONLY
dc.titleHigh-Temperature Operation of Terahertz Quantum Cascade Laser Sourcesen_US
dc.typeJournal Articleen_US
dc.description.versionVersion of Recorden_US
dc.relation.journalIEEE Journal of Selected Topics in Quantum Electronicsen_US
dash.depositing.authorCapasso, Federico
dash.embargo.until10000-01-01
dc.identifier.doi10.1109/JSTQE.2009.2013183*
dash.contributor.affiliatedCapasso, Federico


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