Calibration of hydrogen atoms measurement using femtosecond two-photon laser induced fluorescence
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arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866915198966693888 |
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| author | Starikovskiy, Andrey Dogariu, Arthur |
| author_facet | Starikovskiy, Andrey Dogariu, Arthur |
| contents | A new calibration method for H-fs-TALIF is proposed, and the ratio of two-photon absorption cross-sections, $σ^{(2)}$, for atomic hydrogen (H) and krypton (Kr) is determined for the broadband emission of a femtosecond laser system. The estimated ratio of the two-photon absorption cross-sections for H and Kr is $σ^{(2)}$ for H and Kr $σ^{(2)}$(Kr)/$σ^{(2)}$(H) = $0.027\pm 20$%, which is nearly twenty times lower than values previously obtained with narrowband nanosecond lasers. This discrepancy highlights the need for independent calibration of TALIF measurements for a specific laser pulsewidth range. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_11909 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Calibration of hydrogen atoms measurement using femtosecond two-photon laser induced fluorescence Starikovskiy, Andrey Dogariu, Arthur Atomic Physics Instrumentation and Detectors Optics Plasma Physics A new calibration method for H-fs-TALIF is proposed, and the ratio of two-photon absorption cross-sections, $σ^{(2)}$, for atomic hydrogen (H) and krypton (Kr) is determined for the broadband emission of a femtosecond laser system. The estimated ratio of the two-photon absorption cross-sections for H and Kr is $σ^{(2)}$ for H and Kr $σ^{(2)}$(Kr)/$σ^{(2)}$(H) = $0.027\pm 20$%, which is nearly twenty times lower than values previously obtained with narrowband nanosecond lasers. This discrepancy highlights the need for independent calibration of TALIF measurements for a specific laser pulsewidth range. |
| title | Calibration of hydrogen atoms measurement using femtosecond two-photon laser induced fluorescence |
| topic | Atomic Physics Instrumentation and Detectors Optics Plasma Physics |
| url | https://arxiv.org/abs/2404.11909 |