Measuring ultrafast laser pulses using a single-shot amplitude swing implementation
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| Format: | Preprint |
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2025
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| _version_ | 1866918100636532736 |
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| author | Barbero, Cristian Sola, Íñigo J. Alonso, Benjamín |
| author_facet | Barbero, Cristian Sola, Íñigo J. Alonso, Benjamín |
| contents | Single-shot characterization techniques are crucial when dealing with shot-to-shot pulse-shape fluctuations (e.g., unstable laser systems, high-power, or with low repetition rate) since the scanning configurations cannot measure single pulses. The demand for simple setups that can be easily adapted to a wide variety of experimental conditions is continuously rising. In this work, we propose a single-shot implementation of amplitude swing, maintaining the compactness, versatility, and robustness of the scanning versions of this technique. First, we theoretically study the proposed implementation, based on a pair of uniaxial wedges. Then, we present the retrieval ptychographic algorithm. Finally, we experimentally demonstrate the setup by comparing the single-shot and scanning traces and their retrieved pulses. In sum, we provide the ultrafast science community with a simple and versatile setup capable of measuring single laser pulses, which is necessary for characterizing fluctuating pulse trains, meeting the current increasing demand. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_08824 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Measuring ultrafast laser pulses using a single-shot amplitude swing implementation Barbero, Cristian Sola, Íñigo J. Alonso, Benjamín Optics Single-shot characterization techniques are crucial when dealing with shot-to-shot pulse-shape fluctuations (e.g., unstable laser systems, high-power, or with low repetition rate) since the scanning configurations cannot measure single pulses. The demand for simple setups that can be easily adapted to a wide variety of experimental conditions is continuously rising. In this work, we propose a single-shot implementation of amplitude swing, maintaining the compactness, versatility, and robustness of the scanning versions of this technique. First, we theoretically study the proposed implementation, based on a pair of uniaxial wedges. Then, we present the retrieval ptychographic algorithm. Finally, we experimentally demonstrate the setup by comparing the single-shot and scanning traces and their retrieved pulses. In sum, we provide the ultrafast science community with a simple and versatile setup capable of measuring single laser pulses, which is necessary for characterizing fluctuating pulse trains, meeting the current increasing demand. |
| title | Measuring ultrafast laser pulses using a single-shot amplitude swing implementation |
| topic | Optics |
| url | https://arxiv.org/abs/2503.08824 |