An Optical Limiter with Tunable Threshold

Abstract

The invention discloses a threshold-tunable optical amplitude limiter which comprises a liquid injection part, a plane serrated mixing pipeline, a circular optical cavity and an outlet pipeline, wherein an inlet and an outlet are formed in the circular optical cavity; the outlet in the circular optical cavity is directly communicated with the outlet pipeline; the liquid injection part is a Y-shaped pipeline; the end, where two openings are formed, of the Y-shaped pipeline is the inlet end of the liquid injection part; the end, where one opening is formed, of the Y-shaped pipeline is the outlet end of the liquid injection part; the outlet end of the liquid injection part 1 is communicated with one end of the plane serrated mixing pipeline; the other end of the plane serrated mixing pipeline is communicated with the inlet in the circular optical cavity. As the liquid injection part is the Y-shaped pipeline, and the Y-shaped pipeline comprises two inlets for two solutions, the concentration of oxidized graphene entering the circular optical cavity can be precisely controlled by controlling the flow speeds of the oxidized graphene ethanol solution and the ethanol solution. Therefore, an optical non-linear adjustable function can be realized.

Description

technical field [0001] The invention relates to a device in the field of optical nonlinear material and optical fluidic application, especially an optical limiter with tunable threshold. Background technique [0002] Strong laser light can easily cause damage to human eyes, optical detectors, and optical precision instruments, so certain protective measures are usually taken for this purpose. An optical limiter can provide this protection. The current graphene-based optical limiter usually grows a single layer of graphene on a copper sheet by chemical vapor deposition, and then transfers it to the required device to make an optical limiter device. Since graphene is a material that does not dissolve in any solvent, its application is greatly limited. Graphene oxide is a nonlinear material that can be dissolved in many solvents. Based on this, people dissolve it in water, dimethylformamide, tetrahydrofuran and other reagents, and then mix the graphene oxide solution with epo...

AI Technical Summary

Problems solved by technology

For example, for a known optical pulse signal with unstable light intensity, a fixed limiter can be designed according to the performance deterioration of the optical pulse signal for shaping, but for a previously unknown optical pulse signal, a fixed limiter is very difficult. Difficult to achieve high-quality plastic surgery

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