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Small-conical-angle W-shaped axicon for angle polarization selection

An angular polarization and axicon technology, applied in the optical field, can solve the problems of complex design, high price, poor stability, etc., and achieve the effect of easy processing and simple structure

Inactive Publication Date: 2016-10-12
HUAZHONG UNIV OF SCI & TECH +1
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Problems solved by technology

[0004] Aiming at the shortcomings of the above-mentioned background technology, the present invention provides a small cone angle W-shaped axicon for angular polarization selection, aiming to solve the problem of low polarization purity of polarized light caused by poor stability and complex design in the prior art. expensive problem

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  • Small-conical-angle W-shaped axicon for angle polarization selection
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  • Small-conical-angle W-shaped axicon for angle polarization selection

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0025] Such as figure 1 As shown, the small cone angle W-shaped axicon of the present invention is W-shaped along the section parallel to and passing through the direction of the optical axis 1. Axis 1 is rotationally symmetrical to the center. The middle part of the small cone angle W-shaped axicon is an outer cone structure, and the peripheral part is an inner cone structure. The reflection surface consists of the outer cone surface 2 in the central area and the inner cone surface in the peripheral area. 3, the junction of the outer cone surface 2 and the inner cone surface 3 is provided with a ...

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Abstract

The invention discloses a small-conical-angle W-shaped axicon for angle polarization selection. The reflecting plane of the small-conical-angle W-shaped axicon is formed by an outer conical surface positioned on a central area and an inner conical surface on a peripheral area, wherein the inner conical surface and the outer conical surface form a hollow reflecting structure. The geometrical relationship between a semi-cone angle alpha of the outer conical surface and a semi-cone angle beta of the inner conical surface satisfies 3alpha+2beta=90 degrees, and 0 degree < alpha<30 degrees. The small-conical-angle W-shaped axicon has the advantages of simple structure, good symmetry, high anti-imbalance ability, excellent thermally-stability performance and mechanical property, simple manufacture process and low cost. The small-conical-angle W-shaped axicon is applicable to gas, solid and semiconductor lasers to generate high power and high-purity angle polarized light.

Description

technical field [0001] The invention belongs to the field of optical technology, and in particular relates to a small cone angle W-shaped axicon for angular polarization selection. Background technique [0002] Angularly polarized light is a common vector polarized beam. The polarization direction of any point on the spot is perpendicular to the radial direction. Because there is a polarization "singularity" in the center of the beam, it is characterized as a ring-shaped beam with zero central light intensity. Angularly polarized light can be obtained by processing the laser beam output by the laser. Due to the special vector polarization structure of angularly polarized light, it has been applied in many fields. In the field of scientific research, angularly polarized light can be used to guide atoms. Under strong focusing, angularly polarized light can also be used as "optical tweezers" to capture particles. Angularly polarized light can also be used in two-photon fluor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30
CPCG02B5/3025
Inventor 李波王智用胡友友李杰雄贺昌玉廖炳华
Owner HUAZHONG UNIV OF SCI & TECH
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