Laser-induced ferroelectric domain inversion detection device

A technology of ferroelectric crystals and detection devices, which is applied in the direction of measurement devices, measurement of phase influence characteristics, preparation of test samples, etc.

Inactive Publication Date: 2009-12-02
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, the use of digital holographic interferometry and Mach-Zehnder interferometric optical path for real-time and accurate measurement of laser-induced ferroelectric crystal domain inversion has not been reported so far.

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[0025] The detection device for laser-induced ferroelectric crystal domain inversion of the present invention will be further described below with reference to the drawings and examples, but this should not limit the protection scope of the present invention.

[0026] see first Figure 5 , Figure 5 It is a schematic structural diagram of a detection device for laser-induced crystal domain inversion of the present invention. As can be seen from the figure, the detection device for laser-induced ferroelectric crystal domain inversion of the present invention includes an inductive light source (17), a helium-neon laser (12), a polarization device and a detection device,

[0027] The polarizing device is composed of a polarizing fixture and a high-voltage direct current circuit, see figure 1 , 2, 3, 4, the polarization fixture includes a left electrode fixture, a right electrode fixture, and two O-rings 6, and the left electrode fixture and the right electrode fixture are made...

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Abstract

The invention relates to a laser-induced ferroelectric domain inversion detection device, which consists of an inducing light source, a helium-neon laser, a polarization device and a detection device. The device of the invention has the characteristics of reliable theory, easy operation, high resolution, no contact, no damage and real-time domain inversion observation.

Description

technical field [0001] The present invention is related to ferroelectric crystal domains, especially a detection device for laser-induced ferroelectric crystal domain inversion, which is mainly used for ferroelectric crystal domain inversion at micron and submicron levels, and realizes ferroelectric crystal domain inversion on a microscopic scale. Effective control of the domain structure, and real-time detection of the domain inversion process, in order to achieve three-dimensional inversion domains with arbitrary shapes and fine structures at any position in a single crystal. Background technique [0002] The ferroelectric domains of lithium niobate crystals have been widely used in nonlinear optics, new optical devices and many other fields. With the future development of nonlinear ferroelectric materials, such as the generation of first-order quasi-phase-matched ultraviolet second harmonics, electro-optic Bragg gratings and photonic crystals, etc., periodic inversion dom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/45G01N21/01G01N1/28
Inventor 侯培培职亚楠周煜孙建锋刘立人
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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