-
document
-
Ren, Y. (author), Hovenier, J.N. (author), Higgins, R. (author), Gao, J.R. (author), Klapwijk, T.M. (author), Shi, S.C. (author), Bell, A. (author), Klein, B. (author), Williams, B.S. (author), Kumar, S. (author), Hu, Q. (author), Reno, J.L. (author)
A terahertz (THz) heterodyne spectrometer is demonstrated based on a quantum cascade laser (QCL) as a local oscillator (LO) and an NbN hot electron bolometer as a mixer, and it is used to measure high-resolution molecular spectral lines of methanol (CH3OH) between 2.913–2.918 THz. The spectral lines are taken from a gas cell containing methanol...
journal article 2010
-
document
-
Khosropanah, P. (author), Baryshev, A. (author), Zhang, W. (author), Jellema, W. (author), Hovenier, J.N. (author), Gao, J.R. (author), Klapwijk, T.M. (author), Paveliev, D.G. (author), Williams, B.S. (author), Kumar, S. (author), Hu, Q. (author), Reno, J.L. (author), Klein, B. (author), Hesler, J.L. (author)
We demonstrate the phase locking of a 2.7 THz metal–metal waveguide quantum cascade laser (QCL) to an external microwave signal. The reference is the 15th harmonic, generated by a semiconductor superlattice nonlinear device, of a signal at 182 GHz, which itself is generated by a multiplier chain (x12) from a microwave synthesizer at ~15 GHz....
journal article 2009
-
document
-
Orlova, E.E. (author), Hovenier, J.N. (author), Klaassen, T.O. (author), Kasalynas, I. (author), Adam, A.J.L. (author), Gao, J.R. (author), Klapwijk, T.M. (author), Williams, B.S. (author), Kumar, S. (author), Hu, Q. (author), Reno, J.L. (author) journal article 2006
-
document
-
Gao, J.R. (author), Hovenier, J.N. (author), Yang, Z.Q. (author), Baselmans, J.J.A. (author), Baryshev, A. (author), Hajenius, M. (author), Klapwijk, T.M. (author), Adam, A.J.L. (author), Klaassen, T.O. (author), Williams, B.S. (author), Kumar, S. (author), Hu, Q. (author), Reno, J.L. (author)
We report the first demonstration of an all solid-state heterodyne receiver that can be used for high-resolution spectroscopy above 2?THz suitable for space-based observatories. The receiver uses a NbN superconducting hot-electron bolometer as mixer and a quantum cascade laser operating at 2.8?THz as local oscillator. We measure a double...
journal article 2005
Source URL (retrieved on 2024-06-09 20:02): https://repository.tudelft.nl/islandora/search/%2520?%253Bamp%253Bf%255B0%255D=mods_name_personal_author_namePart_family_ss%253A%2522Hoffmans%2522&%253Bamp%253Bf%255B1%255D=mods_subject_topic_ss%253A%2522stortsteen%2522&%253Bamp%253Bf%255B2%255D=mods_subject_topic_ss%253A%2522discharge%255C%2520measurement%2522&%253Bamp%253Bf%255B3%255D=mods_name_personal_author_namePart_family_ss%253A%2522Akkermans%2522&%253Bf%255B0%255D=mods_subject_topic_ss%253A%2522stability%2522&collection=research&display=tud_default&f%255B0%255D=mods_name_personal_author_namePart_family_ss%253A%2522Maccabiani%2522&f%255B1%255D=mods_subject_topic_ss%253A%2522slappe%255C%2520bodem%2522&f%255B2%255D=mods_subject_topic_ss%253A%2522CT03.12.11%2522&f%255B3%255D=mods_subject_topic_ss%253A%2522instrument%2522&f%255B4%255D=mods_subject_topic_ss%253A%2522geotechnische%255C%2520meetlat%2522&f%255B5%255D=RELS_EXT_isMemberOfCollection_uri_s%253A%2522info%255C%253Afedora%255C/collection%255C%253Air%2522&f%255B6%255D=mods_name_personal_author_namePart_family_ss%253A%2522Spruit%2522&f%255B7%255D=mods_subject_topic_ss%253A%2522Duurzaam%255C%2520OnderhoudsStrategie%2522&f%255B8%255D=mods_subject_topic_ss%253A%2522zettingsprognose%2522&f%255B9%255D=mods_genre_s%253A%2522report%2522&f%5B0%5D=mods_name_personal_author_namePart_family_ss%3A%22Klapwijk%22&f%5B1%5D=mods_name_personal_author_namePart_family_ss%3A%22Kumar%22