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Double-layer cascade connection optical limiter

An optical clipping, double-level technology, applied in instruments, optics, nonlinear optics, etc., can solve the problems of complex preparation, poor optical clipping performance, limited material types, etc., and achieve the effect of broadening the working range.

Active Publication Date: 2014-02-26
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

However, this method is complicated to prepare, requires precise reaction conditions, and the types of materials used are also limited.
Although the carbon nanotube phthalocyanine mixture (non-conjugated mixture) can partially adjust the optical limiting curve, nonlinear tests show that its optical limiting performance is not good and cannot meet the requirements of practical applications

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  • Double-layer cascade connection optical limiter
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  • Double-layer cascade connection optical limiter

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with accompanying drawing and example, but these explanations can not be interpreted as limiting the scope of the present invention, and the protection scope of the present invention is defined by the claims, and any modification on the basis of the claims of the present invention is protection scope of the present invention.

[0020] see first figure 1 , figure 1 It is a schematic diagram of the structure of the double-layer cascaded optical limiter of the present invention. In the figure, the nonlinear medium 1 is loaded in the cavity in the transparent glass container 2, and the number of the cavity is determined according to the requirement.

[0021] This example illustrates that a double-layer cascaded optical limiter can be formed by using two materials, carbon nanotubes and zinc phthalocyanine, and the adjustment of nonlinear response can be realized by changing the concentration and the type o...

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Abstract

A double-layer cascade connection optical limiter is formed by a double-layer empty-chamber transparent container which accommodates the dimethyl formamide dispersion liquid of a single-walled carbon nanotube and the dimethyl formamide liquid solution of ZnPc. According to the double-layer cascade connection optical limiter, adjustment of an optical limiting curve is achieved due to adjustment of an arrangement sequence and the concentration of non-linear mediums. The double-layer cascade connection optical limiter can be applied to the laser protection field to protect human bodies or sensors from being damaged through hard lights.

Description

technical field [0001] The invention relates to an optical limiter, in particular to a double-layer cascaded optical limiter Background technique [0002] Due to its high intensity, coherence, collimation and other advantages, laser is playing an increasingly important role in the fields of manufacturing, medicine, science and technology, and safety. However, laser is also a dangerous light source, which has a devastating effect on sensitive optical devices, human eyes, skin, etc. Therefore, how to enhance the safety of laser use has become a hot spot of concern. In order to effectively control the energy density of laser projection, the concept of an optical limiter has been proposed, which has the characteristics of low optical transmittance at high optical energy density and high transmittance at low optical energy density. This device allows light beams below a preset light intensity to pass through, but when the light intensity is higher than the preset light limiting ...

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Application Information

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IPC IPC(8): G02F1/355G02F1/35
Inventor 王康鹏王俊张龙程鑫
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI