Entangled two-photon absorption for the continuous generation of excited state populations in plasma
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arXiv
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| Hauptverfasser: | , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866910602065084416 |
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| author | Smith, David R. Beuting, Matthias Hartog, Daniel J. Den Geiger, Benedikt Sanders, Scott T. Yang, Xuting Choy, Jennifer T. |
| author_facet | Smith, David R. Beuting, Matthias Hartog, Daniel J. Den Geiger, Benedikt Sanders, Scott T. Yang, Xuting Choy, Jennifer T. |
| contents | Entangled two-photon absorption (ETPA) may be a viable technique to continuously drive an excited state population in plasma for high-bandwidth spectroscopy measurements of localized plasma turbulence or impurity density. Classical two-photon absorption commonly requires a high-intensity, pulsed laser, but entangled photons with short entanglement time and high time correlation may allow for ETPA using a lower intensity, continuous-wave laser. Notably, ETPA with non-collinear entangled photon generation allows for cross-beam spatial localization of the absorption or fluorescence signal using a single laser source. Entangled photon generation, the ETPA cross-section, candidate transitions for an Ar-II species, and plans for a proof-of-principle measurement in a helicon plasma are discussed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_08391 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Entangled two-photon absorption for the continuous generation of excited state populations in plasma Smith, David R. Beuting, Matthias Hartog, Daniel J. Den Geiger, Benedikt Sanders, Scott T. Yang, Xuting Choy, Jennifer T. Quantum Physics Plasma Physics Entangled two-photon absorption (ETPA) may be a viable technique to continuously drive an excited state population in plasma for high-bandwidth spectroscopy measurements of localized plasma turbulence or impurity density. Classical two-photon absorption commonly requires a high-intensity, pulsed laser, but entangled photons with short entanglement time and high time correlation may allow for ETPA using a lower intensity, continuous-wave laser. Notably, ETPA with non-collinear entangled photon generation allows for cross-beam spatial localization of the absorption or fluorescence signal using a single laser source. Entangled photon generation, the ETPA cross-section, candidate transitions for an Ar-II species, and plans for a proof-of-principle measurement in a helicon plasma are discussed. |
| title | Entangled two-photon absorption for the continuous generation of excited state populations in plasma |
| topic | Quantum Physics Plasma Physics |
| url | https://arxiv.org/abs/2409.08391 |