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LiNa5Mo9O30 crystal-based broadband high-damage-resistance polarizing prism and application thereof

A polarizing prism, broadband technology, applied in prisms, polarizing elements, instruments, etc., can solve the problems of incomplete coverage of the light transmission band, non-renewable growth of polarized crystals, slowness, etc.

Inactive Publication Date: 2022-03-04
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems that the existing polarizing prism has low light damage, the light transmission band cannot completely cover the visible-mid-infrared band, and the polarization crystal cannot be regenerated and grows slowly, the present invention selects a biaxial crystal with excellent comprehensive performance as the prism matrix, providing A wide-band, highly damage-resistant LiNa 5 Mo 9 o 30 Crystal Polarizing Prism

Method used

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  • LiNa5Mo9O30 crystal-based broadband high-damage-resistance polarizing prism and application thereof
  • LiNa5Mo9O30 crystal-based broadband high-damage-resistance polarizing prism and application thereof
  • LiNa5Mo9O30 crystal-based broadband high-damage-resistance polarizing prism and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] A LiNa-based 5 Mo 9 o 30 Crystal broadband, high damage resistance polarizing prism, polarizing prism includes LiNa 5 Mo 9 o 30 For crystal prisms, the incident light direction is along the crystallographic c-axis of the crystal.

[0037] LiNa 5 Mo 9 o 30 The projection of the crystal prism is a right triangle, and the incident light is incident along the Y axis of the refractive index, such as figure 2 As shown, the polarizing prism of this embodiment includes two pieces of LiNa 5 Mo 9 o 30 Crystal prism, two prisms are connected together through the air layer along the inclined plane, LiNa 5 Mo 9 o 30 The apex angle of the crystal prism is calculated from the wavelength of the incident light, where n1 is LiNa 5 Mo 9 o 30 The crystal refractive index, n2 is the refractive index of the air layer, the vertex angle of each prism is 31°, and the two prisms are connected together through the air layer along the slope. The incident light direction is alon...

Embodiment 2

[0041] A LiNa-based 5 Mo 9 o 30 The structure of the polarizing prism with a wide wavelength band and high damage resistance is as described in Example 1, except that the two prisms are connected together through a layer of optical glue along the inclined plane. The total opposite angle of the two beams of polarized light will change according to the refractive index of the photoresist, and the apex angle of the prism can be adjusted.

Embodiment 3

[0043] One application has the above LiNa-based 5 Mo 9 o 30 The optical device of the crystal wide-band, highly damage-resistant polarizing prism, the polarizing prism of the present invention can be applied to the polarized light modulation in the optical experiment, such as Figure 4 Application of medium prisms in isolators. An optical isolator can be constructed by placing a Faraday rotator that rotates the plane of polarization of incident light by 45° between prisms intersecting each other at 45°. The isolator only allows light propagating in one direction to pass through the system, while blocking light propagating in the opposite direction.

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Abstract

The invention relates to a broadband high-damage-resistance polarizing prism based on LiNa5Mo9O30 crystals and application thereof, and belongs to the technical field of polarizing prisms, the polarizing prism comprises two LiNa5Mo9O30 crystal prisms, the vertex angle of each prism is calculated according to the wavelength, the direction of incident light is along the crystal crystallography c axis, and the two prisms are connected together through an air layer along an inclined plane. According to the output of crystal birefringence polarized light in the biaxial crystal, the refractive index and the total reflex angle of the LiNa5Mo9O30 crystal polarized light in practical application are calculated. The light transmission band of the crystal can completely cover the visible-middle infrared band, the light damage resistance threshold value is high, the large-size and high-quality crystal can be easily obtained, polarized light output of a certain band is achieved, and through measurement, the extinction ratio of the polarization prism is larger than 10000 and is close to that of a common polarization prism at present, and application in actual optics can be met.

Description

technical field [0001] The invention relates to a LiNa-based 5 Mo 9 o 30 The invention relates to a polarizing prism with a wide wavelength band and high damage resistance and its application, belonging to the technical field of polarizing prisms. Background technique [0002] Polarizing prisms are designed based on the principle of total reflection of light by utilizing the birefringence phenomenon of light in crystals. Polarizing prism is an important device in optical experiments, and larger birefringence is the basic requirement for polarizing prisms with high extinction ratio and broadband applications. At present, the application of linear optical materials is mainly concentrated on uniaxial crystals. The reason is that for uniaxial crystals, the birefringence used in prisms is the difference between the two refractive indices in the crystal, that is, the difference between the main axis refractive indices is the effective The birefringence, its incident plane and ...

Claims

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Application Information

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IPC IPC(8): G02B5/30G02B5/04G02B1/02G02B1/08
CPCG02B5/3025G02B5/04G02B1/02G02B1/08
Inventor 高泽亮陶绪堂杜晓利
Owner SHANDONG UNIV
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