Tunable Terahertz Signal Generation by Chirped Pulse Photomixing
Journal article, 2007

Tunable signal generation in the gigahertz to terahertz range was demonstrated by photomixing of a chirped optical pulse and its time-delayed replica. The chirped pulses were created by chromatically dispersing femtosecond pulses from a mode-locked fiber ring laser, and frequency tuning was achieved by adjusting the time delay and/or the amount of group velocity dispersion. It is shown that the signal phase is locked to the femtosecond-laser pulses and that an extinction ratio close to 100% can be obtained. Analytical calculations on the signal chirp introduced by higher order dispersion are also presented and compared with the experimental data

submillimeter-wave generation

Fiber optics

microwave photonics



Johan Stigwall

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Andreas Wiberg

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

IEEE Photonics Technology Letters

1041-1135 (ISSN)

Vol. 19 12 931 - 933

Subject Categories


Atom and Molecular Physics and Optics

Other Electrical Engineering, Electronic Engineering, Information Engineering

More information