Cavity phase engineering for stable enhanced terahertz pulse trains.
We show that the cavity round-trip Gouy phase leads to pulse-to-pulse variation of the absolute phase and temporal profile of circulating few- or single-cycle pulses in empty resonators. This pulse-to-pulse variation can be eliminated by the proper insertion of a lens into the cavity. An application to terahertz resonators with phase-locked feedback is discussed.
Feng
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Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor 48109-2122, USA. sfeng@umich.edu
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