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Polarizing prism based on alpha-BaTeMo 2O9 crystal

A -batemo2o9, polarizing prism technology, applied in the field of polarizing prisms, can solve the problem of low utilization rate of crystals, and achieve the effect of high utilization rate of crystals

Inactive Publication Date: 2013-10-09
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the problem of low crystal utilization rate existing in the existing polarizing prism, and provides a kind of α-BaTeMo based α-BaTeMo 2 o 9 Crystal Polarizing Prisms

Method used

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  • Polarizing prism based on alpha-BaTeMo 2O9 crystal
  • Polarizing prism based on alpha-BaTeMo 2O9 crystal
  • Polarizing prism based on alpha-BaTeMo 2O9 crystal

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Embodiment Construction

[0025] Such as figure 2 Shown, the polarizing prism of the present invention comprises two α-BaTeMo 2 o 9 Crystal prism, the apex angle of each prism is 28°, and the two prisms are connected together through the air layer along the inclined plane. The incident light direction is along the crystallographic c-axis of the crystal (refractive index main axis n y ), the optical axis direction is perpendicular to the rectangular face of the prism. can be changed by changing two pieces of α-BaTeMo 2 o 9 The connecting layer of the crystal prism slope (optical glue with different refractive index instead of the air layer) obtains polarizing prisms cut with different apex angles. By adjusting the vertex angle of the prism, the design of the polarizing prism in the crystal light band (0.4-5μm) is realized.

[0026] The polarizing prism of the present invention passes through image 3 The measuring setup shown measures its extinction ratio. The measuring device includes a He-Ne ...

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Abstract

The invention provides a polarizing prism based on an alpha-BaTeMo2O9 crystal. The polarizing prism comprises two alpha-BaTeMo2O9 crystal prism bodies and the top angle of each prism body is 28 degrees. The direction of incident light is along the axis c in crystal crystallography, the optical axis direction is perpendicular to the right-angle face of each prism body, and the two prism bodies are connected through an air layer along the inclining faces. According to output of crystal double-refraction polarized light in a biaxial crystal, the refractive index and the whole reflex angle which are actually used in polarized light of the alpha-BaTeMo2O9 crystal are calculated, the use ratio of the crystal is high, and polarized light output in a certain wave band is achieved. Through measurement, the extinction ratio of the polarizing prism is larger than 10000 and is close to that of a commonly used polarizing prism at present, and can satisfy the requirement for application in actual optics.

Description

technical field [0001] The present invention relates to a kind of application α-BaTeMo 2 o 9 A crystal polarizing prism belongs to the technical field of polarizing prisms. Background technique [0002] Using the birefringence phenomenon of light in the crystal, the crystal can be made into various prisms to obtain linearly polarized light. This prism is called a polarizing prism. Polarizing prism is an important device in various optical experiments. Larger birefringence is a fundamental requirement to realize polarizing prisms with high extinction ratio and broadband applications. For uniaxial crystals, the birefringence used in a prism is the difference between the two indices of refraction in the crystal, ie the difference in the principal axes of refraction is the effective birefringence in the prism. For a biaxial crystal, when the light is incident on the crystal, the cross-section perpendicular to the origin of the coordinates of the refractive index ellipsoid an...

Claims

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Application Information

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IPC IPC(8): G02B5/30G02B27/28G02B1/08
Inventor 陶绪堂高泽亮吴倩张俊杰
Owner SHANDONG UNIV
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