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Phase Locking of a 2.7 THz Quantum Cascade Laser to a Microwave ReferenceWe 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 (x 12) from a microwave synthesizer at approx. 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.
Document ID
20100017123
Document Type
Reprint (Version printed in journal)
Authors
Khosropanah, P. (Space Research Organization Netherlands Groningen, Netherlands)
Baryshev, A. (Space Research Organization Netherlands Groningen, Netherlands)
Zhang, W. (Space Research Organization Netherlands Groningen, Netherlands)
Jellema, W. (Space Research Organization Netherlands Groningen, Netherlands)
Hovenier, J. N. (Delft Univ. of Technology Delft, Netherlands)
Gao, J. R. (Space Research Organization Netherlands Groningen, Netherlands)
Klapwijk, T. M. (Space Research Organization Netherlands Groningen, Netherlands)
Paveliev, D. G. (State Univ. of Nizhny Novgorod)
Williams, B. S. (Massachusetts Inst. of Tech. Cambridge, MA, United States)
Hu, Q. (Massachusetts Inst. of Tech. Cambridge, MA, United States)
Reno, J. L. (Sandia National Labs. Albuquerque, NM, United States)
Klein, B. (Max-Planck-Inst. fuer Radioastronomie Bonn, Germany)
Hesler, J. L. (Virginia Diodes, Inc. Charlottesville, VA, United States)
Date Acquired
August 24, 2013
Publication Date
October 1, 2009
Publication Information
Publication: Optics Letters
Volume: 34
Issue: 19
Subject Category
Optics
Funding Number(s)
CONTRACT_GRANT: NNX07AI99G
CONTRACT_GRANT: DE-AC04-94AL85000
Distribution Limits
Public
Copyright
Other