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arXiv · 1307.1526

Initial carrier-envelope phase of few-cycle pulses determined by THz emission from air plasma

Rongjie Xu·Ya Bai·Liwei Song·Peng Liu·Ruxin Li·Zhizhan Xu
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Abstract

The evolution of THz waveform generated in air plasma provides a sensitive probe to the variation of the carrier envelope phase (CEP) of propagating intense few-cycle pulses. Our experimental observation and calculation reveal that the number and positions of the inversion of THz waveform are dependent on the initial CEP, which is near 0.5{\pi} constantly under varied input pulse energies when two inversions of THz waveform in air plasma become one. This provides a method of measuring the initial CEP in an accuracy that is only limited by the stability of the driving few-cycle pulses.

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Rongjie Xu, Ya Bai, Liwei Song, Peng Liu, Ruxin Li, Zhizhan Xu. 2013-07-05. Initial carrier-envelope phase of few-cycle pulses determined by THz emission from air plasma. https://doi.org/10.1063/1.4817975

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