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arXiv · 0906.2036

Sub-50 attosecond pulse generation from multicycle nonlinear chirped pulses

Yang Xiang·Yueping Niu·Yihong Qi·Shangqing Gong
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Abstract

We present a method of producing single attosecond pulses by high-order harmonic generation with multi-cycle nonlinear chirped driver laser pulses. The symmetry of the laser feld in several optical cycles near the pulse center is dramatically broken, and then the photons which cover a much broad spectrum burst almost only in one optical cycle. So an ultra-broad continuum spectrum appears in the high order harmonic spectrum, from which an isolated sub-50 attosecond pulse could be obtained. The results are almost independent of the length and chirp form of the driver laser pulse.

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Yang Xiang, Yueping Niu, Yihong Qi, Shangqing Gong. 2009-06-11. Sub-50 attosecond pulse generation from multicycle nonlinear chirped pulses. https://arxiv.org/abs/0906.2036

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