Carrier-envelope phase measurement from half-cycle high harmonics

Details Carrier-envelope phase measurement from half-cycle high harmonics Carrier-envelope phase measurement from half-cycle high harmonics

2008-01-04

arxiv.org/abs/0801.0639v1

Physics

Atomic Physics

6 figures, 3 movies

Scientific paper

10.1364/OE.16.005868

We present a method to distinguish the high harmonics generated in individual half-cycle of the driving laser pulse by mixing a weak ultraviolet pulse, enabling one to observe the cutoff of each half-cycle harmonic. We show that the detail information of the driving laser pulse, including the laser intensity, pulse duration and carrier-envelope phase, can be {\it in situ} retrieved from the harmonic spectrogram. In addition, our results show that this method also distinguishes the half-cycle high harmonics for a pulse longer than 10 fs, suggesting a potential to extend the CEP measurement to the multi-cycle regime.

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