We report a thermo-optical bistability observed in silicon micro-cantilevers irradiated by laser beam with mW powers: reflectivity, transmissivity, absorption, and temperature can change factor of two between stable states for the same input power. The dependency absorption at origin results from interferences internal reflections cantilever thickness, acting as lossy Fabry-P\'erot cavity. A th...

We propose a scheme for controlling nonlinear coherent perfect absorption (CPA) in three-level \Lambda-type atom-cavity system. Generally, the normally CPA and bistable can be attained at different frequencies of an input probe field. With control field coupling one ground states excited state atoms, two types same frequency. Besides, CPA, highest output-input ratio high stable low is approxima...

This paper theoretically studies a hybrid optomechanical system embedded with two coupled quantum dots and third-order Kerr nonlinear medium inside the cavity. The optical bistability absorption spectrum are analyzed for proposed system. From Hamiltonian which describes system, set of Langevin equations derived. Using these motion, steady-state mean field analysis is done gives phenomena bistab...