Controlling self-Kerr nonlinearity with an external magnetic field in a degenerate two-level inhomogeneously broadened medium

Publication date: Available online 8 January 2020Source: Physics Letters AAuthor(s): Nguyen Huy Bang, Dinh Xuan Khoa, Le Van DoaiAbstractThe magnitude and sign of self-Kerr nonlinear coefficient in a degenerate two-level inhomogeneously broadened medium are simply controlled by an external magnetic field. By changing the external magnetic field we can switch a negative peak of Kerr nonlinear coefficient into a positive peak and vice versa, and transform a zero value of Kerr nonlinear coefficient into a positive or negative peak in resonant region. Such a controllable Kerr nonlinear coefficient can be used to manipulate the working characteristics of photonic devices such as optical switches and bistable elements.

Source: Physics Letters A - January 8, 2020 Category: Physics Source Type: research