Mid-infrared light field regulation and control method and light guide intensity constraint heterostructure

Abstract

The invention discloses a mid-infrared light field regulation and control method and a light guide intensity constraint heterostructure, and the method comprises the steps: inputting a light source generated by a pumping source and a weak detection seed into the light guide intensity constraint heterostructure, and the light guide intensity constraint heterostructure comprises a silicon nitride core diameter, a silicon dioxide substrate and a cladding, strong constraint effects exist between the silicon nitride core diameter and the silicon dioxide substrate and between the silicon dioxide substrate and the cladding. After the light source is processed by the light guide intensity constraint heterostructure, the light guide intensity constraint heterostructure outputs single-mode waveguide laser with high spatial coherence. The femtosecond pumping field and the adjustable weak detection light are used as light sources, effective wavelength regulation near 3.5 microns is achieved through nonlinear interaction, single-mode waveguide laser output with high spatial coherence is obtained, and the problem of infrared light field regulation in an on-chip light source is solved.

Description

technical field [0001] The present invention relates to the technical field of optical wavelength conversion, in particular to a mid-infrared light field control method, system, mobile terminal and computer-readable storage medium. Background technique [0002] Mid-infrared light generation is a research hotspot in the field of wavelength conversion. The method of directly generating mid-infrared light is widely used in spectroscopy, detection systems, optical sensing, biophotonics and other fields, especially in the functional group region in the range of 3-5 μm. However, there are currently many methods for directly generating mid-infrared light, such as interband cascade lasers, quantum cascade lasers, and Fe2+-doped crystals, but they all have the characteristics of complex structures and poor tunable ranges. In addition, supercontinuum generation in photonic integrated waveguides can realize mid-infrared light generation, but supercontinuum generation has the characteri...

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Problems solved by technology

[0004] The main purpose of the present invention is to provide a mid-infrared light field control method, system, mobile terminal and computer-readable storage medium, aiming to solve the poor controllability of the target when generating mid-infrared light in the prior art, and the reachable range of the spectrum and the conversion efficiency still cannot meet the needs of practical applications

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