Spectral Broadening of Chirped Laser Pulse Caused by Four-Wave Mixing in BaWO<sub>4</sub> Crystals
The spectral broadening of a chirped, temporally stretched (up to 200 ps) Ti:sapphire laser pulse propagating together with a broadband low-power seed pulse through BaWO<sub>4</sub> crystals was experimentally and numerically studied. Our analysis demonstrated that self-phase modulation...
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| Format: | Article |
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MDPI AG
2022-12-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/9/12/1000 |
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| author | Igor Kinyaevskiy Leonid Seleznev Andrey Ionin |
| author_facet | Igor Kinyaevskiy Leonid Seleznev Andrey Ionin |
| author_sort | Igor Kinyaevskiy |
| collection | DOAJ |
| description | The spectral broadening of a chirped, temporally stretched (up to 200 ps) Ti:sapphire laser pulse propagating together with a broadband low-power seed pulse through BaWO<sub>4</sub> crystals was experimentally and numerically studied. Our analysis demonstrated that self-phase modulation could not have affected the pulse spectrum under the experimental conditions. The spectral broadening of the Ti:sapphire laser pulse was found to be due to four-wave mixing, which resulted in transferring the power of the central wavelength to the spectral wings. To the best of our knowledge, this is the first demonstration of such origin of laser pulse spectral broadening in crystals. |
| first_indexed | 2024-03-09T15:57:23Z |
| format | Article |
| id | doaj.art-65d8dd748a504ec9aeeadd84c74bb021 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-09T15:57:23Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-65d8dd748a504ec9aeeadd84c74bb0212023-11-24T17:26:10ZengMDPI AGPhotonics2304-67322022-12-01912100010.3390/photonics9121000Spectral Broadening of Chirped Laser Pulse Caused by Four-Wave Mixing in BaWO<sub>4</sub> CrystalsIgor Kinyaevskiy0Leonid Seleznev1Andrey Ionin2P.N. Lebedev Physical Institute, Russian Academy of Sciences, 119991 Moscow, RussiaP.N. Lebedev Physical Institute, Russian Academy of Sciences, 119991 Moscow, RussiaP.N. Lebedev Physical Institute, Russian Academy of Sciences, 119991 Moscow, RussiaThe spectral broadening of a chirped, temporally stretched (up to 200 ps) Ti:sapphire laser pulse propagating together with a broadband low-power seed pulse through BaWO<sub>4</sub> crystals was experimentally and numerically studied. Our analysis demonstrated that self-phase modulation could not have affected the pulse spectrum under the experimental conditions. The spectral broadening of the Ti:sapphire laser pulse was found to be due to four-wave mixing, which resulted in transferring the power of the central wavelength to the spectral wings. To the best of our knowledge, this is the first demonstration of such origin of laser pulse spectral broadening in crystals.https://www.mdpi.com/2304-6732/9/12/1000ultrashort laser pulsechirped pulsefour-wave mixingspectral broadeningBaWO<sub>4</sub> crystal |
| spellingShingle | Igor Kinyaevskiy Leonid Seleznev Andrey Ionin Spectral Broadening of Chirped Laser Pulse Caused by Four-Wave Mixing in BaWO<sub>4</sub> Crystals Photonics ultrashort laser pulse chirped pulse four-wave mixing spectral broadening BaWO<sub>4</sub> crystal |
| title | Spectral Broadening of Chirped Laser Pulse Caused by Four-Wave Mixing in BaWO<sub>4</sub> Crystals |
| title_full | Spectral Broadening of Chirped Laser Pulse Caused by Four-Wave Mixing in BaWO<sub>4</sub> Crystals |
| title_fullStr | Spectral Broadening of Chirped Laser Pulse Caused by Four-Wave Mixing in BaWO<sub>4</sub> Crystals |
| title_full_unstemmed | Spectral Broadening of Chirped Laser Pulse Caused by Four-Wave Mixing in BaWO<sub>4</sub> Crystals |
| title_short | Spectral Broadening of Chirped Laser Pulse Caused by Four-Wave Mixing in BaWO<sub>4</sub> Crystals |
| title_sort | spectral broadening of chirped laser pulse caused by four wave mixing in bawo sub 4 sub crystals |
| topic | ultrashort laser pulse chirped pulse four-wave mixing spectral broadening BaWO<sub>4</sub> crystal |
| url | https://www.mdpi.com/2304-6732/9/12/1000 |
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