Nonlinear measuring system capable of changing light intensity

A measurement system and nonlinear technology, applied in the fields of nonlinear optics and computers, can solve the problems of not studying nonlinear absorption rate and nonlinear refractive index, affecting the accuracy of nonlinear refractive index, not being intelligent and automatic enough, and achieving the reduction of The effect of small laser power instability error, convenient measurement and simple structure

Pending Publication Date: 2018-07-20
HENAN NORMAL UNIV
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Problems solved by technology

[0008] Aiming at the deficiencies of the prior art, the present invention provides a non-linear measurement system that can change the light intensity, which solves the problem of affecting the accuracy of the nonlinear refraction coefficient, lack of m...

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  • Nonlinear measuring system capable of changing light intensity

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] Such as Figure 1-2As shown, the present invention provides a technical solution: a non-linear measurement system that can change the light intensity, including a programmable laser 1, a stepping stage 6, a control box 13, and a mirror machine is arranged above the programmable laser 1 2. One side of the anti-mirror machine 2 is provided with a first aperture stop 4, one side of the first aperture stop 4 is provided with a first convex lens 5, and one s...

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Abstract

The invention discloses a nonlinear measuring system capable of changing light intensity. The nonlinear measuring system comprises a programmable laser, a stepping displacement platform and a controlbox, wherein a mirror machine is arranged above the programmable laser; a first aperture diaphragm is arranged on one side of the mirror machine; the stepping displacement platform is placed on one side of a first convex lens; a BS (Beam Splitter) prism is arranged on one side of the stepping displacement platform; a first detector is placed above the mirror machine; and one end of the first detector is connected with the control box by a wire. The nonlinear measuring system provided by the invention solves problems of influence on precision of nonlinear refractive coefficient, lack of measurement under Gaussian beams with different light intensities, lack of intelligence and automation, and lack of research on changes of a nonlinear absorption rate and a nonlinear refractive index of a substance under different light intensities by arranging structures such as the mirror machine, the first detector, the programmable laser, the control box, the first aperture diaphragm, a second aperture diaphragm, the BS prism and the stepping displacement platform.

Description

technical field [0001] The invention relates to the field of nonlinear optics and computer technology, in particular to a nonlinear measuring system capable of changing light intensity. Background technique [0002] Measuring the nonlinear refractive index and nonlinear absorption coefficient of materials is an important means of studying nonlinear optics. There are many traditional methods for measuring optical nonlinearity, such as nonlinear interference, degenerate four-wave mixing, near-degenerate three-wave mixing, Beam distortion measurement and other methods, these methods have high sensitivity, but cannot distinguish the positive and negative of the nonlinear refractive index, and the measurement device is complicated, so it is difficult to realize. The emergence of Z-scan technology is widely used because of its high sensitivity and simple device, which overcomes the difficulties of the above methods and has very important practical application value. The present in...

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Application Information

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IPC IPC(8): G01N21/01G01N21/41
CPCG01N21/01G01N21/4133
Inventor 秦朝朝张猛原静
Owner HENAN NORMAL UNIV
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