Effect of decreasing pressure on soliton self-compression in higher-order modes of a gas-filled capillary
We numerically investigate soliton self-compression in the higher-order modes of a gas-filled capillary with decreasing pressure. We demonstrate four times enhancement in the compression with the decreasing pressure compared to the equivalent constant pressure case in the HE12 mode, reaching sub-cyc...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Online Access: | https://hdl.handle.net/10356/157787 |
| _version_ | 1811687588460756992 |
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| author | Wan, Ying Chang, Wonkeun |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Wan, Ying Chang, Wonkeun |
| author_sort | Wan, Ying |
| collection | NTU |
| description | We numerically investigate soliton self-compression in the higher-order modes of a gas-filled capillary with decreasing pressure. We demonstrate four times enhancement in the compression with the decreasing pressure compared to the equivalent constant pressure case in the HE12 mode, reaching sub-cycle duration of 1.85 fs at its output. Moreover, the negative pressure gradient effectively suppresses the intermodal coupling in the later stage of the compressor, which helps to maintain high output mode purity. These findings are of direct benefit for applications that require ultrashort light pulses in unconventional spatial beam profiles, including in nonlinear frequency conversion, microscopy, micromachining, and particle manipulation. |
| first_indexed | 2024-10-01T05:18:42Z |
| format | Journal Article |
| id | ntu-10356/157787 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:18:42Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1577872022-09-21T07:10:23Z Effect of decreasing pressure on soliton self-compression in higher-order modes of a gas-filled capillary Wan, Ying Chang, Wonkeun School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Optics Gas-Filled Capillaries We numerically investigate soliton self-compression in the higher-order modes of a gas-filled capillary with decreasing pressure. We demonstrate four times enhancement in the compression with the decreasing pressure compared to the equivalent constant pressure case in the HE12 mode, reaching sub-cycle duration of 1.85 fs at its output. Moreover, the negative pressure gradient effectively suppresses the intermodal coupling in the later stage of the compressor, which helps to maintain high output mode purity. These findings are of direct benefit for applications that require ultrashort light pulses in unconventional spatial beam profiles, including in nonlinear frequency conversion, microscopy, micromachining, and particle manipulation. Ministry of Education (MOE) Published version Ministry of Education - Singapore (2020-T2-2-026). 2022-05-12T08:37:59Z 2022-05-12T08:37:59Z 2021 Journal Article Wan, Y. & Chang, W. (2021). Effect of decreasing pressure on soliton self-compression in higher-order modes of a gas-filled capillary. Optics Express, 29(5), 7070-7083. https://dx.doi.org/10.1364/OE.418217 1094-4087 https://hdl.handle.net/10356/157787 10.1364/OE.418217 29 2-s2.0-85101423421 5 29 7070 7083 en 2020-T2-2-026 Optics Express © 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for noncommercial purposes and appropriate attribution is maintained. All other rights are reserved. application/pdf |
| spellingShingle | Engineering::Electrical and electronic engineering Optics Gas-Filled Capillaries Wan, Ying Chang, Wonkeun Effect of decreasing pressure on soliton self-compression in higher-order modes of a gas-filled capillary |
| title | Effect of decreasing pressure on soliton self-compression in higher-order modes of a gas-filled capillary |
| title_full | Effect of decreasing pressure on soliton self-compression in higher-order modes of a gas-filled capillary |
| title_fullStr | Effect of decreasing pressure on soliton self-compression in higher-order modes of a gas-filled capillary |
| title_full_unstemmed | Effect of decreasing pressure on soliton self-compression in higher-order modes of a gas-filled capillary |
| title_short | Effect of decreasing pressure on soliton self-compression in higher-order modes of a gas-filled capillary |
| title_sort | effect of decreasing pressure on soliton self compression in higher order modes of a gas filled capillary |
| topic | Engineering::Electrical and electronic engineering Optics Gas-Filled Capillaries |
| url | https://hdl.handle.net/10356/157787 |
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