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Author | Khosropanah P.; Baryshev A.; Zhang W.; Jellema W.; Hovenier J.N.; Gao G.R.; Klapwijk T.M; Paveliev D.G.; Williams B.S.; Kumar S.; Hu Q.; Reno J.L.; Klein B.; Hesler J.L. | ||||
Title | Phase-locking of a 2.7-THz quantum cascade laser to a microwave reference | Type | Journal Article | ||
Year | 2009 | Publication | Optics Letters | Abbreviated Journal | |
Volume | 34 | Issue | Pages | 2958-2960 | |
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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 con-firms that the QCL is phase locked. This result opens the possibility to extend heterodyne interferometers into the far-infrared range. |
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Notes | Approved | no | |||
Call Number | RPLAB @ atomics90 @ | Serial | 966 | ||
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