A w-shaped axicon for angular polarization selection

A technology of angular polarization and axicon mirror, which is applied in the field of optics, can solve the problems of low polarization purity, poor stability, and high price of polarized light, and achieve improved anti-damage threshold and anti-dislocation ability, small thermal influence, and reduced heat loss. distortion effect

Active Publication Date: 2018-12-07
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0004] In view of the shortcomings of the above-mentioned background technology, the present invention provides a W-shaped axicon for angular polarization selection, aiming to solve the problem of low polarization purity and high price of polarized light in the prior art due to poor stability and complex design. question

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  • A w-shaped axicon for angular polarization selection
  • A w-shaped axicon for angular polarization selection
  • A w-shaped axicon for angular 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 W-shaped axicon of the present invention is W-shaped along a section parallel to and passing through the direction of the optical axis 1, the section is axisymmetric about the optical axis 1, and the W-shaped axicon is rotationally symmetric with the optical axis 1 as the center , the middle part of the W-shaped axicon is an outer cone structure, and the peripheral part is an inner cone structure. A transition area 4 with a width of D is provided at the junction of the tapered surfaces 3. The transition area 4 can be an annular plane perpendicular to the optic...

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Abstract

The invention discloses a W-shaped axial cone mirror used for angle direction polarization selection. A reflection face of the W-shaped axial cone mirror consists of an outer conical surface positioned at a central area and an inner conical surface positioned at a peripheral area, the inner conical surface and the outer conical surface form a reflecting structure having a hollow inner part, and a half cone angle alpha of the outer conical surface and a half cone angle beta of the inner conical surface satisfy the following geometric relation expression: 2alpha+beta=90 degrees, 0 degree<alpha<45 degrees. The W-shaped axial cone mirror is characterized by simple structure, good symmetry, strong anti-imbalance ability, excellent thermal stability and mechanical property, easy-to-manufacture property and low cost; the W-shaped axial cone mirror can be widely used in gas, solid and semiconductor lasers to generate high power and high purity angle direction polarized light.

Description

technical field [0001] The invention belongs to the field of optical technology, in particular to a 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 fluorescence imaging to break thro...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/30
CPCG02B5/3066
Inventor 胡友友李波唐霞辉马科贺昌玉廖炳华
Owner HUAZHONG UNIV OF SCI & TECH
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