Single-cycle gap soliton in a subwavelength structure

Details Single-cycle gap soliton in a subwavelength structure Single-cycle gap soliton in a subwavelength structure

2010-02-02

arxiv.org/abs/1002.0439v1

Phys. Rev. Lett. 104, 073902 (2010)

Physics

Quantum Physics

4 pages, 6 figures

Scientific paper

We demonstrate that a single sub-cycle optical pulse can be generated when a pulse with a few optical cycles penetrates through resonant two-level dense media with a subwavelength structure. The single-cycle gap soliton phenomenon in the full Maxwell-Bloch equations without the frame of slowly varying envelope and rotating wave approximations is observed. Our study shows that the subwavelength structure can be used to suppress the frequency shift caused by intrapulse four-wave mixing in continuous media and supports the formation of single-cycle gap solitons even in the case when the structure period breaks the Bragg condition. This suggests a way toward shortening high-intensity laser fields to few- and even single-cycle pulse durations.

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