Tunable High-Order Harmonic Soliton Pulsed Fiber Laser Based on Mof-Derived Co3o4 Dodecahedron

Abstract

Metal-organic frameworks (MOFs) are porous crystalline materials composed of metal centers and organic ligands, widely utilized in catalysis and optoelectronic applications due to their diverse structural properties and high specific surface areas. A dodecahedral cone-saturated absorber based on porous Co3O4 exhibits pronounced nonlinearity at 1550 nm, with a modulation depth of 13.1% and a saturation intensity of 10.6 MW/cm2. At 1564.6 nm, the material generates soliton pulses with a pulse width of 1.08 ps and a modulation interval of 4 ps. By optimizing the resonator structure, tunable high-harmonic soliton pulses ranging from 4.5 MHz to 333 MHz are achieved. This tunable high-order harmonic soliton pulse significantly enhances the performance of fiber lasers, offering improved flexibility and adaptability for signal transmission. Moreover, it paves the way for the development of advanced optoelectronic devices such as ultra-compact optical switches, optical memory, and quantum communication technologies.

Keywords: metal-organic frame, nonlinear optical properties, high harmonic mode-locking, Fiber laser