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Opt Lett. 2011 Jan 15;36(2):226-8. doi: 10.1364/OL.36.000226.

Octave-spanning carrier-envelope phase stabilized visible pulse with sub-3-fs pulse duration.

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Advanced Ultrafast Laser Research Center and Department of Engineering Science, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan.


The visible second harmonic of the idler output from a noncollinear optical parametric amplifier was compressed using adaptive dispersion control with a deformable mirror. The amplifier was pumped by and seeded in the signal path by a common 400 nm second-harmonic pulse from a Ti:sapphire regenerative amplifier. Thus, both the idler output and the second harmonic of the idler were passively carrier-envelope phase stabilized. The shortest pulse duration achieved was below 3 fs.

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