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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2310.10986 |
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| _version_ | 1866913312929742848 |
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| author | Xu, Litong Xi, Tingting |
| author_facet | Xu, Litong Xi, Tingting |
| contents | The temporal sidelobes of few-cycle pulses seriously restrict their applications in ultrafast science. We propose a unique mechanism that enables the generation of sub-two-cycle pulses with high temporal quality based on soliton self-cleaning in air-plasma channels. A robust spatiotemporal soliton could be formed from pulse self-compression by modulating the dispersion of the air-plasma channel via the adjusted plasma density. Due to ionization, the blue-shifted soliton with a larger group velocity captures the leading sidelobes whereas the plasma generated by the soliton defocuses the trailing sidelobes, which are eventually eliminated after a long-distance propagation. The self-cleaning of spatiotemporal soliton leads to no sidelobes in the temporal profile of the sub-two-cycle pulse. The required density of the preformed plasma for arbitrary central wavelength from near-infrared to mid-infrared regime is predicted theoretically and confirmed by (3D+1) simulations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_10986 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Generation of high quality sub-two-cycle pulses by self-cleaning of spatiotemporal solitons in air-plasma channels Xu, Litong Xi, Tingting Optics The temporal sidelobes of few-cycle pulses seriously restrict their applications in ultrafast science. We propose a unique mechanism that enables the generation of sub-two-cycle pulses with high temporal quality based on soliton self-cleaning in air-plasma channels. A robust spatiotemporal soliton could be formed from pulse self-compression by modulating the dispersion of the air-plasma channel via the adjusted plasma density. Due to ionization, the blue-shifted soliton with a larger group velocity captures the leading sidelobes whereas the plasma generated by the soliton defocuses the trailing sidelobes, which are eventually eliminated after a long-distance propagation. The self-cleaning of spatiotemporal soliton leads to no sidelobes in the temporal profile of the sub-two-cycle pulse. The required density of the preformed plasma for arbitrary central wavelength from near-infrared to mid-infrared regime is predicted theoretically and confirmed by (3D+1) simulations. |
| title | Generation of high quality sub-two-cycle pulses by self-cleaning of spatiotemporal solitons in air-plasma channels |
| topic | Optics |
| url | https://arxiv.org/abs/2310.10986 |