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Method for measuring transient state optical nonlinearity of material

An optical nonlinear and transient technology, applied in the field of nonlinear photonics materials and nonlinear optical information processing, to achieve accurate test results, high measurement sensitivity, and comprehensive test parameters.

Inactive Publication Date: 2016-03-16
SUZHOU MICRONANO LASER PHOTON TECH CO LTD
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Problems solved by technology

The invention proposes a technique for measuring transient optical nonlinearity of materials, which can overcome the shortcomings of traditional time-resolved Z-scan and PO pump detection techniques

Method used

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  • Method for measuring transient state optical nonlinearity of material
  • Method for measuring transient state optical nonlinearity of material
  • Method for measuring transient state optical nonlinearity of material

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Embodiment 1

[0026] Example 1: See attached figure 2 As shown, the method in the above technical solution is based on the detection light path and the pump light path. The pump light path is mainly composed of two mirrors 4, 6, a right-angle prism 5, and a convex lens 7. The right-angle prism 5 can be translated back and forth to change the pump light. The distance to the sample, that is, the delay time; the detection light path is mainly composed of reflector 9, convex lens 10, convex lens 11, circular aperture 12, convex lens 13, beam splitter 15, convex lens 16, circular aperture 18, and circular baffle 19. Convex lens 20, first detector 17 and second detector 21; the pumping light path and the detecting light path are simultaneously focused on the sample 14 to be tested.

[0027] The laser pulse 1 is divided into the pump beam 3 and the probe beam 8 by the beam splitter 2. The detection beam 8 changes its direction through the mirror 9 and expands the beam through the convex lens 10 and ...

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Abstract

The present invention discloses a method for measuring transient state optical nonlinearity of a material. According to the method, a laser beam is divided into two laser beams such as pump light and detection light, the pump light passing through delay line is focused onto a sample to be measured to make the non-linear sample produce optical nonlinearity, the detection light passing through the sample is divided into two beams through a light splitter, one beam directly enters a first detector, and the other beam passes through a round baffle, then passes through a round small hole, and finally enters a second detector; and the method is characterized in that the round baffle is placed in the detection optical path in a far filed manner, and the measurement steps comprise: (1) placing the sample to be measured, and respectively collecting the energies of the detection light at different times by using the two detectors, and (2) processing the detection light energy curves at different delay times to obtain the optical nonlinearity parameter. According to the present invention, the measurement system working according to the method of the present invention has advantages of high sensitivity, simple data processing, concurrent nonlinear absorption and refraction measurement, no requirement of separation, and the like.

Description

Technical field [0001] The invention relates to a method for testing or analyzing materials using optical means, in particular to a method for studying the nonlinear optical physical mechanism of materials and measuring their optical physical parameters, belonging to nonlinear photonics materials and nonlinear optical information processing field. Background technique [0002] The rapid development in the field of nonlinear optics is inseparable from the research on optical nonlinear materials. Finding ideal optical nonlinear materials for various applications is a very important task in the field of nonlinear optics. Materials with large optical nonlinear coefficients and ultra-fast optical response are considered as emerging materials for the manufacture of high-speed optoelectronic devices, and have huge potential application value in the field of optical engineering, such as all-optical switches and other components. The research on optical nonlinear materials requires vari...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/41
Inventor 宋瑛林杨俊义
Owner SUZHOU MICRONANO LASER PHOTON TECH CO LTD
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