Fan, H.; Raza, F.; Ahmed, I.; Imran, M.; Nadeem, F.; Li, C.; Li, P.; Zhang, Y. Photon–Phonon Atomic Coherence Interaction of Nonlinear Signals in Various Phase Transitions Eu3+: BiPO4. Nanomaterials2022, 12, 4304.
Fan, H.; Raza, F.; Ahmed, I.; Imran, M.; Nadeem, F.; Li, C.; Li, P.; Zhang, Y. Photon–Phonon Atomic Coherence Interaction of Nonlinear Signals in Various Phase Transitions Eu3+: BiPO4. Nanomaterials 2022, 12, 4304.
Fan, H.; Raza, F.; Ahmed, I.; Imran, M.; Nadeem, F.; Li, C.; Li, P.; Zhang, Y. Photon–Phonon Atomic Coherence Interaction of Nonlinear Signals in Various Phase Transitions Eu3+: BiPO4. Nanomaterials2022, 12, 4304.
Fan, H.; Raza, F.; Ahmed, I.; Imran, M.; Nadeem, F.; Li, C.; Li, P.; Zhang, Y. Photon–Phonon Atomic Coherence Interaction of Nonlinear Signals in Various Phase Transitions Eu3+: BiPO4. Nanomaterials 2022, 12, 4304.
Abstract
We report photon-phonon atomic coherence (cascade- and nested-dressing) interaction from various phase transitions of Eu3+: BiPO4 crystal. Such atomic coherence spectral interaction evolves from out of phase fluorescence to in-phase spontaneous four-wave mixing (SFWM) by changing the time gate. The dressing dip switch and three dressing dips of SFWM result from strong photon-phonon destructive cross- and self-interaction for hexagonal phase, respectively. The more phonon dressing result in destructive interaction, while less phonon dressing result in constructive interaction of atomic coherences. The experimental measurements of photon-phonon interaction agree with theoretical simulations. Based on our results, we proposed a model for an optical transistor (as an amplifier and switch).
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