Ultrafast imaging of laser-induced modifications in planar targets via single-shot in-line holography
We present a holographic single-shot coherent diffractive imaging method based on in-line holography that allows the ultrafast characterization of 2D transmission maps of semi-transparent planar targets such as foils in amplitude and phase. Holographic information is obtained from the interference o...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/ad8eeb |
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| _version_ | 1846163277715865600 |
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| author | Richard Altenkirch Christian Peltz Tom Böttcher Stefan Lochbrunner Franziska Fennel Thomas Fennel |
| author_facet | Richard Altenkirch Christian Peltz Tom Böttcher Stefan Lochbrunner Franziska Fennel Thomas Fennel |
| author_sort | Richard Altenkirch |
| collection | DOAJ |
| description | We present a holographic single-shot coherent diffractive imaging method based on in-line holography that allows the ultrafast characterization of 2D transmission maps of semi-transparent planar targets such as foils in amplitude and phase. Holographic information is obtained from the interference of the transmitted primary beam with the fields scattered from the modified or unknown target regions. A specialized iterative phase retrieval is used to incorporate the holographic nature of the approach and to accelerate and improve convergence. The achievable quality and reproducibility of the reconstructed transmission maps as well as optimal setup parameters are investigated using realistic pre-characterized reference targets. We used non-circular laser-induced hole structures in 30 nm thin gold foils that represent the final state of a laser modification and show that the far field error of the reconstructed diffraction images can be used to estimate and optimize the reconstruction quality in the object plane in order to obtain accurate and reproducible transmission maps. Our results mark the important first step towards the full spatio-temporal analysis of all stages of laser material modification or laser ablation in two-color pump probe experiments, including plasma formation, equilibration, and expansion. |
| format | Article |
| id | doaj-art-7a8ef90b23254759bfc72a24ad69fe63 |
| institution | Kabale University |
| issn | 1367-2630 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj-art-7a8ef90b23254759bfc72a24ad69fe632024-11-19T11:37:58ZengIOP PublishingNew Journal of Physics1367-26302024-01-01261111301010.1088/1367-2630/ad8eebUltrafast imaging of laser-induced modifications in planar targets via single-shot in-line holographyRichard Altenkirch0https://orcid.org/0000-0003-1383-7187Christian Peltz1https://orcid.org/0000-0002-2667-7488Tom Böttcher2https://orcid.org/0009-0002-4374-4395Stefan Lochbrunner3https://orcid.org/0000-0001-9729-8277Franziska Fennel4https://orcid.org/0000-0003-2266-1179Thomas Fennel5https://orcid.org/0000-0002-4149-5164Institute of Physics and Department of Life, Light and Matter, University of Rostock , 18051 Rostock, GermanyInstitute of Physics and Department of Life, Light and Matter, University of Rostock , 18051 Rostock, GermanyInstitute of Physics and Department of Life, Light and Matter, University of Rostock , 18051 Rostock, GermanyInstitute of Physics and Department of Life, Light and Matter, University of Rostock , 18051 Rostock, GermanyInstitute of Physics and Department of Life, Light and Matter, University of Rostock , 18051 Rostock, GermanyInstitute of Physics and Department of Life, Light and Matter, University of Rostock , 18051 Rostock, GermanyWe present a holographic single-shot coherent diffractive imaging method based on in-line holography that allows the ultrafast characterization of 2D transmission maps of semi-transparent planar targets such as foils in amplitude and phase. Holographic information is obtained from the interference of the transmitted primary beam with the fields scattered from the modified or unknown target regions. A specialized iterative phase retrieval is used to incorporate the holographic nature of the approach and to accelerate and improve convergence. The achievable quality and reproducibility of the reconstructed transmission maps as well as optimal setup parameters are investigated using realistic pre-characterized reference targets. We used non-circular laser-induced hole structures in 30 nm thin gold foils that represent the final state of a laser modification and show that the far field error of the reconstructed diffraction images can be used to estimate and optimize the reconstruction quality in the object plane in order to obtain accurate and reproducible transmission maps. Our results mark the important first step towards the full spatio-temporal analysis of all stages of laser material modification or laser ablation in two-color pump probe experiments, including plasma formation, equilibration, and expansion.https://doi.org/10.1088/1367-2630/ad8eebultrafast imaginglaser-induced modificationsholographyphase retrieval |
| spellingShingle | Richard Altenkirch Christian Peltz Tom Böttcher Stefan Lochbrunner Franziska Fennel Thomas Fennel Ultrafast imaging of laser-induced modifications in planar targets via single-shot in-line holography New Journal of Physics ultrafast imaging laser-induced modifications holography phase retrieval |
| title | Ultrafast imaging of laser-induced modifications in planar targets via single-shot in-line holography |
| title_full | Ultrafast imaging of laser-induced modifications in planar targets via single-shot in-line holography |
| title_fullStr | Ultrafast imaging of laser-induced modifications in planar targets via single-shot in-line holography |
| title_full_unstemmed | Ultrafast imaging of laser-induced modifications in planar targets via single-shot in-line holography |
| title_short | Ultrafast imaging of laser-induced modifications in planar targets via single-shot in-line holography |
| title_sort | ultrafast imaging of laser induced modifications in planar targets via single shot in line holography |
| topic | ultrafast imaging laser-induced modifications holography phase retrieval |
| url | https://doi.org/10.1088/1367-2630/ad8eeb |
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