Journal
PHYSICAL REVIEW B
Volume 107, Issue 19, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.107.195140
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We propose a magnetic laser in a subwavelength system consisting of a high-refractive-index dielectric cavity and magnetic quantum emitters. The conditions and feasibility of magnetic lasers in realistic systems are analyzed, with numerical results showing the potential in silicon disks with embedded emitters. The competition between electric and magnetic interactions and the enhancement of magnetic light-matter interactions are also investigated in achievable systems.
We propose a magnetic laser in a subwavelength system consisting of a high-refractive-index dielectric cavity and an active medium formed by magnetic quantum emitters. Stimulated emissions of magnetic quantum emitters induced by their coherent interactions with quantized magnetic fields of a cavity are theoretically considered. The condition to achieve such a magnetic laser is obtained. Numerical results show that magnetic lasers are feasible in some realistic systems, for example, a silicon disk of high-quality whispering gallery modes with embedded emitters. Furthermore, the competitions between the electric interaction and magnetic one in terms of their Purcell factors are also considered in some magnetic laser achievable systems. In a wavelength-scale silicon block of a high-order magnetic mode, the ratio of magnetic Purcell factor to the electric one can reach more than -103 large. Our results open up ways to enhanced magnetic light-matter interactions.
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