A Soluble Carbon Nanotube-AlN Composite Suspension Limiter

Abstract

The invention discloses a soluble CNT (Carbon Nano Tube)-AlN (Aluminum Nitride) composite suspension solution limiter. The soluble CNT-AlN composite suspension solution limiter consists of suspension solution and transparent glassware, wherein the suspension solution is prepared by adding modified AlN and an MWCNT (Multi Walled Carbon Nano Tube) into ethyl alcohol; the transparent glassware is a rectangular closed container, the obtained mixed suspension solution is added into the transparent glassware, the adding amount of the mixed suspension solution is 60-70% of the volume of the transparent glassware, and the limiter can be obtained after the transparent glassware is pumped to be vacuum and sealed. The soluble CNT-AlN composite suspension solution limiter disclosed by the invention has the advantages that the mixed suspension solution is prepared by the modified AlN and the MWCNT, a heat conduction web chain of which the heat conduction rate is very high is formed in the mixed suspension solution, the heat conduction web chain is beneficial for the heat energy conduction in the mixed suspension solution, bubbles can be quickly generated in the mixed suspension solution, and the response time of optical limiting is shortened; the transparent glassware is sealed in vacuum, the radius of the bubbles which are generated in the mixed suspension solution is increased by reducing the air pressure in the rectangular closed container, thus the scattering surface is increased, the transmittance is reduced, and the optical limiting capacity is increased.

Description

technical field [0001] The invention belongs to the field of nonlinear optics, in particular to a soluble carbon nanotube-aluminum nitride composite suspension limiter. Background technique [0002] Since its appearance in 1960, laser has been widely used in the fields of medicine, measurement, chemistry, material processing and national defense due to its advantages of good monochromaticity and high collimation. But what follows is that strong laser light is easy to irradiate human eyes and damage photoelectric equipment. Therefore, the research on laser protection measures, especially laser protection devices, is particularly urgent. [0003] Optical limiters can be broadly classified into active limiters and passive limiters. The active limiter uses active feedback to complete the limiter. For example, the signal obtained by the photodetector is used to control the aperture of the diaphragm to prevent strong light from entering the optical system. The passive limiter u...

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Problems solved by technology

But what follows is that strong laser light is easy to damage the human eye and photoelectric equipment. Therefore, the research on laser protection measures, especially laser protection devices, is particularly urgent.

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