Asymmetric manipulations on the coherent Raman sideband generation under molecular modulations

We study the light evolution through a Raman-active medium, where a pair of fields pump molecules near-resonantly and excite the molecular coherence. A synthetic lattice including multiple frequency sidebands via the coherent Raman process is constructed. By varying the density of molecules in the l...

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Veröffentlicht in:Journal of the Optical Society of America. B, Optical physics Optical physics, 2023-01, Vol.40 (9), p.2470
Hauptverfasser: Yu, Penghong, Wu, Xiaoxiong, Dong, Zhaohui, Chen, Juan, Wang, Kai, Wang, Luojia, Chen, Xianfeng, Yuan, Luqi
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Sprache:eng
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Zusammenfassung:We study the light evolution through a Raman-active medium, where a pair of fields pump molecules near-resonantly and excite the molecular coherence. A synthetic lattice including multiple frequency sidebands via the coherent Raman process is constructed. By varying the density of molecules in the light propagation direction, the system can present a lattice model undergoing dynamic modulations. Further considering the frequency-dependent couplings between synthetic lattice sites, we explore intriguing phenomena, including spectral Bloch oscillation and super Bloch oscillation with asymmetric patterns, which leads to interesting frequency-conversion phenomena with the Raman sideband generations. Our work could be useful for future experiments in coherent Raman sideband processes towards ultrashort pulse generations and higher-frequency conversion.
ISSN:0740-3224
1520-8540
DOI:10.1364/JOSAB.496489