Two-channel optical bistability and multistability in a degenerate four-level atomic medium under a static magnetic field.

Autor: Hien NTT; Vinh University, 182 Le Duan Street, Vinh City, Vietnam.; Ho Chi Minh City University of Industry and Trade, Ho Chi Minh City, Vietnam., Dan NL; Vinh University, 182 Le Duan Street, Vinh City, Vietnam., Bang NH; Vinh University, 182 Le Duan Street, Vinh City, Vietnam., Khoa DX; Vinh University, 182 Le Duan Street, Vinh City, Vietnam., Van Phu N; Vinh University, 182 Le Duan Street, Vinh City, Vietnam., Anh NTL; Vinh University, 182 Le Duan Street, Vinh City, Vietnam., Huong MTT; Vinh University, 182 Le Duan Street, Vinh City, Vietnam., Nhung LTC; Vinh University, 182 Le Duan Street, Vinh City, Vietnam., Linh TTT; Vinh University, 182 Le Duan Street, Vinh City, Vietnam., Thuy LT; Vinh University, 182 Le Duan Street, Vinh City, Vietnam., Chau NTY; Vinh University, 182 Le Duan Street, Vinh City, Vietnam., Anh LNM; Nong Lam University, Ho Chi Minh City, Vietnam., Van Doai L; Vinh University, 182 Le Duan Street, Vinh City, Vietnam. doailv@vinhuni.edu.vn.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2024 Aug 16; Vol. 14 (1), pp. 19007. Date of Electronic Publication: 2024 Aug 16.
DOI: 10.1038/s41598-024-68891-w
Abstrakt: In this paper, we study the formation of optical bistability (OB) and optical multistability (OM) in a degenerate four-level atomic system by an external magnetic field that is excited by a probe laser field, a coupling laser field and a signal laser field. The coupling field can cause electromagnetically induced transparency (EIT) for the probe field in the atomic medium, while the signal field and/or external magnetic field can switch between single-EIT and two-EIT regimes. Based on these properties, OB and OM effects can be formed at two different frequency regions of the probe field (two channels). By adjusting the magnetic field or the intensity and the frequency of laser fields, the threshold intensity and the width of OB or OM can also be changed simply. The model can be useful for experimental observations and applications in modern photonic devices.
(© 2024. The Author(s).)
Databáze: MEDLINE
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