A phase-modulation interferometer for intense, ultrashort, near infrared laser pulses
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arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866909727814844416 |
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| author | Ganeshamandiram, S. Niebuhr, M. Richter, F. Bangert, U. Sansone, G. Stienkemeier, F. Bruder, L. |
| author_facet | Ganeshamandiram, S. Niebuhr, M. Richter, F. Bangert, U. Sansone, G. Stienkemeier, F. Bruder, L. |
| contents | The investigation of coherent phenomena in strong-field processes requires interferometric measurement schemes with high selectivity to disentangle the complex nonlinear response of the system. Interferometers combining acousto-optical phase modulation with lock-in detection feature excellent dynamic range and highly selective detection, thus providing a promising solution. However, acousto-optical modulators (AOMs) cause several issues when operated with intense, ultrashort, near infrared (NIR) laser pulses. The AOMs introduce temporal and angular dispersion, self-phase modulation and reduced acousto-optic efficiency at NIR wavelengths. Here, we present an acousto-optical phase modulation interferometer design that solves these issues. The presented solutions pave the way for the investigation of strong-field processes with phasemodulated interferometry and are also useful to improve the performance of phase-modulation interferometers in other applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_16299 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A phase-modulation interferometer for intense, ultrashort, near infrared laser pulses Ganeshamandiram, S. Niebuhr, M. Richter, F. Bangert, U. Sansone, G. Stienkemeier, F. Bruder, L. Optics Atomic Physics The investigation of coherent phenomena in strong-field processes requires interferometric measurement schemes with high selectivity to disentangle the complex nonlinear response of the system. Interferometers combining acousto-optical phase modulation with lock-in detection feature excellent dynamic range and highly selective detection, thus providing a promising solution. However, acousto-optical modulators (AOMs) cause several issues when operated with intense, ultrashort, near infrared (NIR) laser pulses. The AOMs introduce temporal and angular dispersion, self-phase modulation and reduced acousto-optic efficiency at NIR wavelengths. Here, we present an acousto-optical phase modulation interferometer design that solves these issues. The presented solutions pave the way for the investigation of strong-field processes with phasemodulated interferometry and are also useful to improve the performance of phase-modulation interferometers in other applications. |
| title | A phase-modulation interferometer for intense, ultrashort, near infrared laser pulses |
| topic | Optics Atomic Physics |
| url | https://arxiv.org/abs/2507.16299 |