Single-stage few-cycle pulse amplification

Sagnik Ghosh; Nathan G. Drouillard; TJ Hammond

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arXiv · 2311.08528

Single-stage few-cycle pulse amplification

Sagnik Ghosh·Nathan G. Drouillard·TJ Hammond

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Abstract

Kerr instability can be exploited to amplify visible, near-, and mid-infrared ultrashort pulses. We use the results of Kerr instability amplification theory to inform our simulations amplifying few-cycle pulses. We show that the amplification angle-dependence is simplified to the phase matching condition of four-wave mixing when the intense pump is considered. Seeding with few-cycle pulses near the pump leads to broadband amplification without spatial chirp, while longer pulses undergo compression through amplification. Pumping in the mid-IR leads to multi-octave spanning amplified pulses with single-cycle duration not previously predicted. We discuss limitations of the amplification process and optimizing pump and seed parameters to maximize amplification.

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Sagnik Ghosh, Nathan G. Drouillard, TJ Hammond. 2023-11-14. Single-stage few-cycle pulse amplification. https://arxiv.org/abs/2311.08528

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