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Optical filter for dielectric substance super lattice and manufacturing method thereof

A technology of optical filters and dielectrics, applied in optics, optical components, nonlinear optics, etc., can solve problems such as difficult integration and complicated optical path adjustment, and achieve the effect of easy integration and adjustment

Inactive Publication Date: 2004-06-30
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] Because the traditional Solc filter uses multiple discrete birefringent crystals, the adjustment of its optical path is more complicated and it is not easy to integrate

Method used

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  • Optical filter for dielectric substance super lattice and manufacturing method thereof
  • Optical filter for dielectric substance super lattice and manufacturing method thereof
  • Optical filter for dielectric substance super lattice and manufacturing method thereof

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Embodiment Construction

[0040] Periodically polarized LiNbO 3 (LN) is taken as an example to illustrate how the periodic dielectric superlattice structure realizes the optical filtering function. figure 1 It is a schematic diagram of a traditional folded Solc optical filter. F and S are the fast axis and the slow axis of the wafer respectively. The thickness of each wafer is the same, and its azimuth angle is staggered by ±θ. Phase delay Λ = 2 π λ ( n o - n e ) d , Where d is the thickness of the wafer, n o , N e They are the ordinary and extraordinary refractive indices of the crystal, λ is the wavelength of the light wave. When Λ=(2ν+1)π, ν=1, 2,..., the wafer is called a half-wave plate. The power coupling efficiency between the eigenwave and the slow eigenwa...

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Abstract

The invention dielectric body superlattice optical filter and the manufacturing method, the filter is made up by inserting a single domain dielectric body crystal plate in two orthogonal polarizing discs. The upper and subjacent plates are parallel, the angle between the normal line of the upper and subjacent flats and the self-polarizing direction is theta, the upper flat is set periodically with metal grid positive electrodes, the subjacent flat has a negative electrode, the period of the metal grid electrode lambda=2d, the width of the metal grid electrode d=lambda 0 / 2(n0-ne); the amounts of the metal grid electrodes N =1.60 lambda 0 / (2v+1). delta lambda 1 / 2.

Description

Technical field: [0001] The invention relates to a periodic dielectric superlattice optical filter and a manufacturing method thereof, especially based on lithium niobate (hereinafter referred to as LiNbO 3 (LN)), lithium titanate (hereinafter referred to as LiTaO 3 (LT)) and other ferroelectric superlattice materials (may also include other non-ferroelectric nonlinear optical materials) Solc optical filter and its manufacturing method. Background technique: [0002] Dielectric superlattices use dielectric as the matrix material. The modulation of its microstructure can often be achieved through the modulation of ferroelectric domains and ferroelastic domains, the modulation of composition or heterostructure, the modulation of phase structure or crystallographic orientation The dielectric superlattice can be one-dimensional, two-dimensional or three-dimensional; it can be periodic, quasi-periodic or even other complex structures. In dielectric materials, the important physical pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/28G02F1/05
Inventor 陈险峰石剑虹陈英礼曾祥龙
Owner SHANGHAI JIAO TONG UNIV
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