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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2602.02901 |
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| _version_ | 1866917244235153408 |
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| author | Monti, Federico Madiot, Guilhem Modica, Giuseppe Beaudoin, Grégoire Pantzas, Konstantinos Sagnes, Isabelle Yacomotti, Alejandro M. Raineri, Fabrice |
| author_facet | Monti, Federico Madiot, Guilhem Modica, Giuseppe Beaudoin, Grégoire Pantzas, Konstantinos Sagnes, Isabelle Yacomotti, Alejandro M. Raineri, Fabrice |
| contents | We experimentally demonstrate the direct time-domain characterization of photonic-crystal nanolasers at telecom wavelengths using a nonlinear optical gating technique based on four-wave mixing. This approach enables the temporal characterization of the ultrafast emission dynamics under short-pulse excitation with picosecond time resolution. When a weak continuous-wave component is added to the pulsed pump, the emission becomes deterministic and the build-up time is considerably reduced. The difference between purely pulsed and hybrid excitation regimes points to the influence of pulse-to-pulse timing fluctuations. To elucidate this effect, we perform Langevin-based simulations that reproduce the experimentally observed broadening and confirm that time jitter, originating from spontaneous-emission noise near threshold, dominates the temporal dispersion. These results establish four-wave-mixing gating as a powerful method to probe nanolaser dynamics with picosecond precision. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_02901 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Time-Resolved dynamics of semiconductor nanolaser via four-wave mixing gating Monti, Federico Madiot, Guilhem Modica, Giuseppe Beaudoin, Grégoire Pantzas, Konstantinos Sagnes, Isabelle Yacomotti, Alejandro M. Raineri, Fabrice Optics Mesoscale and Nanoscale Physics We experimentally demonstrate the direct time-domain characterization of photonic-crystal nanolasers at telecom wavelengths using a nonlinear optical gating technique based on four-wave mixing. This approach enables the temporal characterization of the ultrafast emission dynamics under short-pulse excitation with picosecond time resolution. When a weak continuous-wave component is added to the pulsed pump, the emission becomes deterministic and the build-up time is considerably reduced. The difference between purely pulsed and hybrid excitation regimes points to the influence of pulse-to-pulse timing fluctuations. To elucidate this effect, we perform Langevin-based simulations that reproduce the experimentally observed broadening and confirm that time jitter, originating from spontaneous-emission noise near threshold, dominates the temporal dispersion. These results establish four-wave-mixing gating as a powerful method to probe nanolaser dynamics with picosecond precision. |
| title | Time-Resolved dynamics of semiconductor nanolaser via four-wave mixing gating |
| topic | Optics Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2602.02901 |