Generation of second-order sideband and slow-fast light effects in a PT-symmetric optomechanical system. (January 2023)

• Record Type: Journal Article
• Authors: Liao, Qinghong; Song, Menglin; Bao, Weida
• Is Part Of: Chaos, solitons and fractals. Volume 166(2023)
• Publication Date: 2023-01
• Subjects: Nonlinear medium -- Slow-fast light -- PT-symmetric -- Second-order sideband; Chaotic behavior in systems -- Periodicals; Solitons -- Periodicals; Fractals -- Periodicals; Chaotic behavior in systems; Fractals; Solitons; Periodicals; 003.7
• DOI: 10.1016/j.chaos.2022.112978
• Languages: English
• ISSNs: 0960-0779

Abstract

Abstract: We theoretically study the second-order sideband generation and slow-fast light effects in a parity-time (PT) symmetric optomechanical system, which consists of an active cavity and a passive cavity containing optical parametric amplifier (OPA). Compared to the double-passive nonlinear system, we find that the second-order sideband efficiency can be significantly enhanced by the tunneling strength in the PT-symmetric system with OPA. The flexible manipulation of the second-order generation also can be realized by modulating OPA gain and phase. Moreover, the fast and slow light effects in the optomechanical system are discussed. When the tunneling strength J = 3 κ 1, the time of the second-order sideband group delay can be effectively prolonged in a PT-symmetric cavity in the presence of OPA. The results may have some guidance for the enhancement of second-order sideband efficiency, which has potential applications in optical communication and storage. Highlights: A parity-time (PT) symmetric nonlinear optomechanical system with optical parametric amplifier (OPA). The generation and enhancement of second-order sideband are being investigated. The fast and slow light effects are discussed. The results may have potential applications in optical communication and storage.