The repetition-rate and carrier-envelope offset of two independent mode-locked oscillators are locked. The resulting coherent optical pulse-train is compressed, and the pulse duration is measured to be 3.7 fs, about 1.1 cycles of the optical field.
© 2012 OSA
W. P. Putnam, J. A. Cox, A. Sell, A. Leitenstorfer, and F. X. Kaertner, "Single-Cycle Optical Pulses from Coherently Combined Independent Mode-locked Lasers," in Conference on Lasers and Electro-Optics 2012, OSA Technical Digest (online) (Optical Society of America, 2012), paper CW1D.1.
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