A Design Method for Microstructured Devices for Generating Rotationally Symmetrically Polarized Light
A technology of rotational symmetry and design method, which is applied in the field of optics, can solve the problems of high cost, cumbersome operation and generation of beams, complex generation methods of radially polarized light and angularly polarized light, and achieve high polarization quality, simple design, and high precision. high effect
Active Publication Date: 2018-06-22
青岛中科智富光电科技有限公司
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Problems solved by technology
However, the existing methods for generating radially polarized light and angularly polarized light are often complicated, the cost is too high, and the process of operation and generating light beams is very cumbersome
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[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0030] The invention is a design method of a microstructure device for obtaining polarized light with vector space variation and rotation symmetry, and is used for forming the microstructure device. The microstructure device includes a device body, and the device body is preferably in the shape of a circular sheet. The device body has at least a light-transmitting area. A groove structure is embossed on the light-transmitting area. The groove structure is composed of a plurality of concave stripes and a plurality of protruding stripes distributed alternately.
[0031] According to the theory of vector optics, the polarization electric vector of a light wave can be regarded as the superposition of the polarization (s vector) of the electric vector perpendicular to the incident plane and the polarization (p vector) of the electric vector parallel to the incid...
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The invention discloses a design method for a microstructure device for generating rotational symmetric polarized light, and belongs to the technical field of optics. The method is used for the design of a trench structure of the microstructure device. The method comprises the steps: 1, calculating a final etching depth h of the trench structure; 2, calculating the overall shape of a trench, wherein the preset parameters are as follows: the wavelength lambda of a light source, the refractive index ns of the material of the microstructure device, a filling factor a / d, an etching depth initial value h0, a periodic width d, a radius R, and the number of trenches n, and the radius R is the distance from a point at the part with the biggest periphery on the device body to the center of the device body; 3, forming the microstructure device according to steps 1 and 2. The method is simple in design, is high in precision, and is high in polarization quality of obtained polarized beams.
Description
technical field [0001] The invention relates to the field of optical technology, in particular to a design method of a microstructure device for generating rotationally symmetrical polarized light. Background technique [0002] Polarization is a fundamental property of light. When light interacts with matter, since matter responds differently to light with different polarization states, this determines the important requirement for rotationally symmetric polarized light with vector space changes. In addition, due to the special symmetry of the polarization direction of this kind of polarized light, it has broad application prospects in the fields of optical communication, dynamic optical storage, quantum optics, and particle manipulation. Among the polarized light with rotational symmetry in vector space variation, radially polarized light and angularly polarized light are the most widely used and researched at present. There are two main types of methods for its generatio...
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IPC IPC(8): G02B27/28
CPCG02B27/286
Inventor 田维坚周国尊
Owner 青岛中科智富光电科技有限公司