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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Izdano: |
2026
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| Teme: | |
| Online dostop: | https://arxiv.org/abs/2602.02463 |
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| _version_ | 1866912869016141824 |
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| author | Amirtharaj, Sakthi Priya Xu, Zujun Strickland, Donna Chowdhury, Borun Acharya, Sagnik Samantray, Priyam Prabhakar, Anil Sahu, Kisor Kumar Bamer, Franz Swayamjyoti, S. |
| author_facet | Amirtharaj, Sakthi Priya Xu, Zujun Strickland, Donna Chowdhury, Borun Acharya, Sagnik Samantray, Priyam Prabhakar, Anil Sahu, Kisor Kumar Bamer, Franz Swayamjyoti, S. |
| contents | When multifrequency Raman scattering is driven in the transient regime by two chirped pump pulses, the resulting anti-Stokes orders exhibit asymmetric spectral broadening toward lower frequencies, leading to a characteristic double-peaked structure in each order. In this Letter, frequency-resolved optical gating (FROG) is used to investigate the spectral evolution of the first anti-Stokes Raman component. To interpret the observed features, we introduce a double-pulse interference model and employ an adaptive learning-based reconstruction algorithm using the Adam optimizer to retrieve the temporal field evolution. The simulation results show good agreement with the experimental measurements. Our analysis indicates that the observed red-shifted spectral component originates from linear Raman processes within the two-photon dressed-state framework. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_02463 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Numerically optimized FROG results for the study of red-shifted spectra in multi-frequency Raman generation Amirtharaj, Sakthi Priya Xu, Zujun Strickland, Donna Chowdhury, Borun Acharya, Sagnik Samantray, Priyam Prabhakar, Anil Sahu, Kisor Kumar Bamer, Franz Swayamjyoti, S. Optics Materials Science When multifrequency Raman scattering is driven in the transient regime by two chirped pump pulses, the resulting anti-Stokes orders exhibit asymmetric spectral broadening toward lower frequencies, leading to a characteristic double-peaked structure in each order. In this Letter, frequency-resolved optical gating (FROG) is used to investigate the spectral evolution of the first anti-Stokes Raman component. To interpret the observed features, we introduce a double-pulse interference model and employ an adaptive learning-based reconstruction algorithm using the Adam optimizer to retrieve the temporal field evolution. The simulation results show good agreement with the experimental measurements. Our analysis indicates that the observed red-shifted spectral component originates from linear Raman processes within the two-photon dressed-state framework. |
| title | Numerically optimized FROG results for the study of red-shifted spectra in multi-frequency Raman generation |
| topic | Optics Materials Science |
| url | https://arxiv.org/abs/2602.02463 |