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Device for detecting domain modulation of ferroelectric crystals in real time

A ferroelectric crystal, real-time detection technology, applied in the field of ferroelectric crystal domains, can solve the problems of inability to quantitatively invert domain structure depth and inability to observe the process of domain inversion in real time

Inactive Publication Date: 2013-01-09
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Optical microscopy or scanning electron microscopy can observe domain structures smaller than 0.1 μm, but cannot observe the process of domain inversion in real time
The optical observation method is non-contact and non-destructive, and can observe the formation process of the domain structure in real time, but cannot quantitatively give important information such as the depth of the inversion domain structure in the ferroelectric crystal

Method used

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  • Device for detecting domain modulation of ferroelectric crystals in real time
  • Device for detecting domain modulation of ferroelectric crystals in real time
  • Device for detecting domain modulation of ferroelectric crystals in real time

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Embodiment Construction

[0017] The real-time detection device for ferroelectric crystal domain inversion of the present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention should not be limited by this.

[0018] See figure 1 , figure 1 It is a schematic diagram of the structure of the device for real-time detection of ferroelectric crystal domain inversion of the present invention. It can be seen from the figure that the device of the present invention for real-time detection of ferroelectric crystal domain inversion includes: helium-neon laser 1, filter 2, collimator 3. The first total mirror 4, the second total mirror 5, the dichroic prism 7, the imaging lens 8, the CCD coupler 9 and the computer 10. The positional relationship of the above components is as follows:

[0019] The 633nm beam output by the helium-neon laser 1 is filtered by the filter 2 and collimated by the collimator 3, and then divided into a reflected...

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Abstract

The invention relates to a device for detecting domain modulation of ferroelectric crystals in real time, and the device comprises a helium-neon laser, a filter, a collimating device, a first totally-reflection mirror, a second total-reflection mirror, a beam splitter prism, an imaging lens, a charge couple device (CCD) coupler and a computer. The device is contactless and free from damage and has high resolution ratio, not only can the dynamic variation of a domain structure be monitored in real time and quantitatively analyzed, but also the static response of the domain structure for an external electric field can be detected, and two-dimensional information and three-dimensional information of the reversal domain structure can be obtained.

Description

Technical field [0001] The invention relates to a ferroelectric crystal domain, in particular to a device for real-time detection of ferroelectric crystal domain inversion. Background technique [0002] With the increasing maturity of the preparation technology of periodic domain inversion, the detection and analysis methods of ferroelectric domains are becoming more diverse and advanced. The selective chemical etching method is fast and relatively simple to observe the domain structure of ferroelectric crystals, but it is destructive. Optical microscope or scanning electron microscope observation method can observe the domain structure smaller than 0.1μm, but the process of domain inversion cannot be observed in real time. The optical observation method is non-contact and non-destructive, and can observe the formation process of the domain structure in real time, but it cannot quantitatively give important information such as the depth of the inversion domain structure in the f...

Claims

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Application Information

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IPC IPC(8): G01N21/45
Inventor 侯培培职亚楠孙建锋刘立人
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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