Print Email Facebook Twitter Phase locking of a 2.7 THz quantum cascade laser to a microwave reference Title Phase locking of a 2.7 THz quantum cascade laser to a microwave reference Author Khosropanah, P. Baryshev, A. Zhang, W. Jellema, W. Hovenier, J.N. Gao, J.R. Klapwijk, T.M. Paveliev, D.G. Williams, B.S. Kumar, S. Hu, Q. Reno, J.L. Klein, B. Hesler, J.L. Faculty Applied Sciences Department QN/Quantum Nanoscience Date 2009-09-24 Abstract 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. Both laser and reference radiations are coupled into a bolometer mixer, resulting in a beat signal, which is fed into a phase-lock loop. The spectral analysis of the beat signal confirms that the QCL is phase locked. This result opens the possibility to extend heterodyne interferometers into the far-infrared range. Subject spectroscopy, heterodyneastronomy and astrophysicsfar infrared or terahertzspectroscopy, teraherzquantum-well, -wire and -dot devices To reference this document use: http://resolver.tudelft.nl/uuid:4a138314-f44f-4f88-ba1f-62cc760eeaab DOI https://doi.org/10.1364/OL.34.002958 Publisher Optical Society of America ISSN 0146-9592 Source http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-19-2958 Source Optics Letters, 34 (19), 2009 Part of collection Institutional Repository Document type journal article Rights (c) 2009 Optical Society of America Files PDF Hovenier_2009.pdf 308.23 KB Close viewer /islandora/object/uuid:4a138314-f44f-4f88-ba1f-62cc760eeaab/datastream/OBJ/view