Enhancement of high harmonic generation in liquid water by resonant excitation in the mid-infrared
We study high harmonic generation (HHG) in the visible spectral range generated in a flat liquid jet of H _2 O, excited by intense mid-infrared (MIR) radiation around 3 μm, which is nearly resonant with the OH vibrational modes. By introducing a weak excitation pulse prior to the intense MIR driver...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | Applied Physics Express |
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| Online Access: | https://doi.org/10.35848/1882-0786/ad98e2 |
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| author | Tianqi Yang Takayuki Kurihara Yangyang Hua Tomoya Mizuno Teruto Kanai Satoshi Ashihara Yoshihisa Harada Jiro Itatani |
| author_facet | Tianqi Yang Takayuki Kurihara Yangyang Hua Tomoya Mizuno Teruto Kanai Satoshi Ashihara Yoshihisa Harada Jiro Itatani |
| author_sort | Tianqi Yang |
| collection | DOAJ |
| description | We study high harmonic generation (HHG) in the visible spectral range generated in a flat liquid jet of H _2 O, excited by intense mid-infrared (MIR) radiation around 3 μm, which is nearly resonant with the OH vibrational modes. By introducing a weak excitation pulse prior to the intense MIR driver pulse for HHG, we observed an enhancement of the 5th, 7th, and 9th harmonics occurring approximately 2 ps after excitation and persisting for more than 120 ps, which is completely absent in the case of non-resonant D _2 O. These results suggest that the enhancement is caused by ultrafast heating through vibrational excitation. |
| format | Article |
| id | doaj-art-47baddcb083c4fe994f1582d370bf9c2 |
| institution | DOAJ |
| issn | 1882-0786 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Applied Physics Express |
| spelling | doaj-art-47baddcb083c4fe994f1582d370bf9c22025-08-20T02:40:02ZengIOP PublishingApplied Physics Express1882-07862024-01-01171212200610.35848/1882-0786/ad98e2Enhancement of high harmonic generation in liquid water by resonant excitation in the mid-infraredTianqi Yang0Takayuki Kurihara1https://orcid.org/0000-0001-6903-002XYangyang Hua2https://orcid.org/0009-0000-1633-5209Tomoya Mizuno3https://orcid.org/0000-0001-6847-8412Teruto Kanai4Satoshi Ashihara5https://orcid.org/0000-0001-6697-2513Yoshihisa Harada6https://orcid.org/0000-0002-4590-9109Jiro Itatani7https://orcid.org/0000-0002-4023-7489The Institute for Solid State Physics, The University of Tokyo , 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8582, JapanThe Institute for Solid State Physics, The University of Tokyo , 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8582, JapanThe Institute for Solid State Physics, The University of Tokyo , 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8582, JapanThe Institute for Solid State Physics, The University of Tokyo , 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8582, JapanThe Institute for Solid State Physics, The University of Tokyo , 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8582, JapanInstitute of Industrial Science, The University of Tokyo , 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, JapanThe Institute for Solid State Physics, The University of Tokyo , 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8582, JapanThe Institute for Solid State Physics, The University of Tokyo , 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8582, JapanWe study high harmonic generation (HHG) in the visible spectral range generated in a flat liquid jet of H _2 O, excited by intense mid-infrared (MIR) radiation around 3 μm, which is nearly resonant with the OH vibrational modes. By introducing a weak excitation pulse prior to the intense MIR driver pulse for HHG, we observed an enhancement of the 5th, 7th, and 9th harmonics occurring approximately 2 ps after excitation and persisting for more than 120 ps, which is completely absent in the case of non-resonant D _2 O. These results suggest that the enhancement is caused by ultrafast heating through vibrational excitation.https://doi.org/10.35848/1882-0786/ad98e2high harmonic generationattosecond sciencestrong-field phenomenanonlinear optics |
| spellingShingle | Tianqi Yang Takayuki Kurihara Yangyang Hua Tomoya Mizuno Teruto Kanai Satoshi Ashihara Yoshihisa Harada Jiro Itatani Enhancement of high harmonic generation in liquid water by resonant excitation in the mid-infrared Applied Physics Express high harmonic generation attosecond science strong-field phenomena nonlinear optics |
| title | Enhancement of high harmonic generation in liquid water by resonant excitation in the mid-infrared |
| title_full | Enhancement of high harmonic generation in liquid water by resonant excitation in the mid-infrared |
| title_fullStr | Enhancement of high harmonic generation in liquid water by resonant excitation in the mid-infrared |
| title_full_unstemmed | Enhancement of high harmonic generation in liquid water by resonant excitation in the mid-infrared |
| title_short | Enhancement of high harmonic generation in liquid water by resonant excitation in the mid-infrared |
| title_sort | enhancement of high harmonic generation in liquid water by resonant excitation in the mid infrared |
| topic | high harmonic generation attosecond science strong-field phenomena nonlinear optics |
| url | https://doi.org/10.35848/1882-0786/ad98e2 |
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