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Monochromatic-light polarizer with continuously-adjustable polarization degree

A technology of polarizer and degree of polarization, which is applied in the field of monochromatic light polarizers, can solve problems such as inconvenient operation, and achieve the effect of convenient adjustment

Inactive Publication Date: 2015-12-16
QUFU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the above two methods are inconvenient to operate in practical applications.

Method used

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  • Monochromatic-light polarizer with continuously-adjustable polarization degree
  • Monochromatic-light polarizer with continuously-adjustable polarization degree
  • Monochromatic-light polarizer with continuously-adjustable polarization degree

Examples

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Effect test

Embodiment 1

[0010] Embodiment 1: as figure 1 As shown, a monochromatic light polarizer with continuously adjustable polarization degree, its structure is as follows figure 1 shown. It consists of a linear polarizer 3 and a λ n / 4 wave plate 4 constitutes. Linearly polarized light polarizer 3 can use Glan-Thompson prism or polarizer; λ n The / 4 wave plate 4 can be made of quartz or magnesium fluoride crystal n / 4 (composite) zero-order wave plate, λ n The two optical end faces of the / 4 wave plate 4 are coated with an anti-reflection film. The incident light is incident on one end of the linearly polarized light polarizer 3, and then passes through λ n / 4 wave plate 4 exits. will lambda n The included angle between the fast axis of the / 4 wave plate 4 and the transmission direction of the linearly polarized polarizer 3 is denoted by Φ, and when the Φ angle is 0°, the degree of polarization of the outgoing light is 1.000.

[0011] Such as figure 2 As shown, the linearly polarized...

Embodiment 2

[0012] Embodiment 2: The similarities between this embodiment and Embodiment 1 will not be repeated. The difference is that when the Φ angle is ±5°, the polarization degree of the outgoing light is 0.985.

Embodiment 3

[0013] Embodiment 3: The similarities between this embodiment and Embodiment 1 will not be repeated, except that when the Φ angle is ±10°, the degree of polarization of the outgoing light is 0.940.

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Abstract

The invention discloses a monochromatic-light polarizer with the continuously-adjustable polarization degree. The monochromatic-light polarizer is formed by a linearly-polarized-light polarizer body and a lambdan / 4 wave plate. The lambdan / 4 wave plate can continuously rotate with incident light as the axis. The incident light carries out incidence from one end of the linearly-polarized-light polarizer body and then passes through the lambdan / 4 wave plate to exit. The included angle between the fast axis of the lambdan / 4 wave plate and the polarization transmitting direction of the linearly-polarized-light polarizer body is represented as phi, and when the angle phi continuously changes within the range from 0 degree to + / -45 degrees, the polarization degree of exiting light continuously changes within the range from 0 to 1. The linearly-polarized-light polarizer body is a Glan-Thompson prism or a polarizing film. The wave plate is a lambdan / 4 composite zero-order wave plate made of quartz and magnesium fluoride crystals, and antireflection films are plated on the two optical end faces of the wave plate.

Description

technical field [0001] The invention belongs to the technical field of optical devices, and specifically discloses a linearly polarized light polarizer and a λ n A monochromatic light polarizer with continuously adjustable polarization degree composed of / 4 wave plate. Background technique [0002] Polarization technology has a wide range of applications in space measurement, autonomous navigation of moving objects, optical space remote sensing, optical communication, polarization imaging, optical metrology, and biological and medical photonics. In many applications of polarizing technology, the core components are various polarizing devices, and the main parameters of the output light are represented by the degree of polarization. Although the degree of polarization of the output light of polarizers made by different methods is high or low, and the degree of polarization of output light of different individuals made by the same method is also different, but for each device...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30
CPCG02B5/3025G02B5/3083
Inventor 吴闻迪
Owner QUFU NORMAL UNIV