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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2103.03047 |
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| _version_ | 1866912960375422976 |
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| author | Kopf, Lea Ruano, Juan R. Deop Hiekkamäki, Markus Stolt, Timo Huttunen, Mikko J. Bouchard, Frédéric Fickler, Robert |
| author_facet | Kopf, Lea Ruano, Juan R. Deop Hiekkamäki, Markus Stolt, Timo Huttunen, Mikko J. Bouchard, Frédéric Fickler, Robert |
| contents | Structured light harnessing multiple degrees of freedom has become a powerful approach to use complex states of light in fundamental studies and applications. Here, we investigate the light field of an ultrafast laser beam with a wavelength-depended polarization state, a beam we term spectral vector beam. We demonstrate a simple technique to generate and tune such structured beams and demonstrate their spectroscopic capabilities. By only measuring the polarization state using fast photodetectors, it is possible to track pulse-to-pulse changes in the frequency spectrum caused by, e.g. narrowband transmission or absorption. In our experiments, we reach read-out rates of around 6 MHz, which is limited by our technical ability to modulate the spectrum and can in principle reach GHz read-out rates. In simulations we extend the spectral range to more than 1000 nm by using a supercontinuum light source, thereby paving the way to various applications requiring high-speed spectroscopic measurements. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2103_03047 |
| institution | arXiv |
| publishDate | 2021 |
| record_format | arxiv |
| spellingShingle | Spectral Vector Beams for High-Speed Spectroscopic Measurements Kopf, Lea Ruano, Juan R. Deop Hiekkamäki, Markus Stolt, Timo Huttunen, Mikko J. Bouchard, Frédéric Fickler, Robert Optics Structured light harnessing multiple degrees of freedom has become a powerful approach to use complex states of light in fundamental studies and applications. Here, we investigate the light field of an ultrafast laser beam with a wavelength-depended polarization state, a beam we term spectral vector beam. We demonstrate a simple technique to generate and tune such structured beams and demonstrate their spectroscopic capabilities. By only measuring the polarization state using fast photodetectors, it is possible to track pulse-to-pulse changes in the frequency spectrum caused by, e.g. narrowband transmission or absorption. In our experiments, we reach read-out rates of around 6 MHz, which is limited by our technical ability to modulate the spectrum and can in principle reach GHz read-out rates. In simulations we extend the spectral range to more than 1000 nm by using a supercontinuum light source, thereby paving the way to various applications requiring high-speed spectroscopic measurements. |
| title | Spectral Vector Beams for High-Speed Spectroscopic Measurements |
| topic | Optics |
| url | https://arxiv.org/abs/2103.03047 |