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A magnet optical rotation component and an optical isolator

An optical component and magnet technology, applied in the optical field, can solve the problems of serious consumables, weak magnetic force, limited magnetic field adjustment range, etc., and achieve the effect of increasing loss and increasing the range of magnetic force variation.

Active Publication Date: 2017-10-03
MAXPHOTONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problems in the prior art that the magnetic force of the magnet optical rotation component is weak, the adjustment range of the magnetic field is limited, and the consumables are relatively serious

Method used

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  • A magnet optical rotation component and an optical isolator
  • A magnet optical rotation component and an optical isolator
  • A magnet optical rotation component and an optical isolator

Examples

Experimental program
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Effect test

Embodiment 1

[0034] see figure 2 , a magnet optical rotation assembly, including a magnetic ring array 1. The magnetic ring array 1 includes a first magnetic ring 11 , a second magnetic ring 12 and a third magnetic ring 13 . Such as image 3 As shown, the first magnetic ring 11 is composed of four first fan-shaped magnetic pieces 111 with the same surface area. The first fan-shaped magnetic piece 111 is an S pole at one end of the fan-shaped inner diameter, and an N pole at one end of the fan-shaped outer diameter. Therefore, the direction of the magnetic field lines of the first sector-shaped magnetic piece 111 is directed from the axis to the radial direction, and the direction of the magnetic force lines of the first magnetic ring 11 composed of the first sector-shaped magnetic pieces 111 is also directed from the axis to the radial direction. According to the principle of homopolar repulsion, the four first sector-shaped magnetic pieces 111 are mutually repulsive, so the four first ...

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PUM

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Abstract

The invention discloses a magnet optical rotation assembly. The magnet optical rotation assembly comprises at least one set of magnet ring array. The magnet ring array comprises a first magnet ring, a second magnet ring and a third magnet ring, the first magnet ring, the second magnet ring and the third magnet ring are sequentially and coaxially stacked and restrained, and the external diameter of the first magnet ring and / or the third magnet ring is adjusted to achieve adjusting of a magnetic field of the magnet ring array. According to the magnet optical rotation assembly, the first magnet ring and the third magnet ring are each composed of at least two flabellate magnetic sheets, the external diameter of the first magnet ring and / or the third magnet ring is variable accordingly, and variation of magnetic force can be adjusted by adjusting the external diameter of the first magnet ring and / or the third magnet ring. The external diameter of the first magnet ring and / or the third magnet ring is adjusted to achieve radial-direction magnetic force adjusting of the magnet optical rotation assembly, and under the condition that losses are not increased, the variation range of the magnetic force of the magnet optical rotation assembly is expanded.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to a magnet optical rotation component and an optical isolator. Background technique [0002] The isolator is an optical device suitable for the output of high-power lasers on a large scale, which effectively avoids the influence of the return beam on the laser beam processing surface. In the design of the isolator, a specific rotation angle is usually generated by combining a strong magnet with a Faraday device, so that the loss of the beam in the reverse direction is large, that is, high isolation. Here, the Faraday device is mainly used to rotate the light vector direction of the beam at a certain angle under a specific magnetic field. The following formula is usually used to characterize this characteristic: θ=VBL, where V is the Verdet constant, B is the magnetic induction, L is the length of the Faraday crystal, and θ is the light vector produced by the Faraday crystal of le...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/09
CPCG02F1/091G02F1/093
Inventor 钟春明李刚居剑蒋峰
Owner MAXPHOTONICS CORP