Preparation method and application of crystal

A technology of crystals and uses, applied in the field of laser and optics, can solve the problems of limited laser application, poor depolarization effect, and large loss

Active Publication Date: 2011-04-27
SHANGHAI BRANCH FUZHOU GAOYI COMM CO LTD
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Diffuse reflection depolarization and scattering depolarization have the problems of high loss and poor depolarization effect, while the conventional birefringent crystal depolarization method is more complicated in processing procedures, and it is difficult to achieve better depolarization effect for small spots. In

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method and application of crystal
  • Preparation method and application of crystal
  • Preparation method and application of crystal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

[0019] By studying the characteristics of the crystals grown by the pulling method, we found that during the growth of some crystals, some of the components will volatilize, and some dopant ions in some crystals have the problem that the separation coefficient is not equal to 1. In the crystal At different stages of growth, the components in the melt change, which leads to changes in the crystal lattice parameters of different layers of the grown crystal, so that the refractive index of crystals in different layers or the refractive index difference between o and e light (in the case of birefringent crystals) there is a difference. By artificially controlling the change of the pulling speed or changing the content of dopant ions in the crystal, a larger or denser difference in the refractive index of the crystal between different layers can be achiev...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to the fields of laser and optics, in particular to an optical crystal. In the invention, the characteristic that the crystal refractive index of crystal grown by a pulling method in the pulling direction is in layered uniform distribution is utilized, the crystal which is processed into a layered structure along the pulling direction is adopted, so that the light-passing direction is vertical or approximately vertical to the pulling direction, and a depolarization device or a position phase piece is manufactured by utilizing the characteristic that the refractive index of the type of crystal is in uneven distribution; and isotropic crystal which is processed into a layered structure along the pulling direction is adopted, so that the light-passing direction is vertical or approximately vertical to the pulling direction, and the position phase piece with disordered position phases is manufactured by utilizing cascade connection of single or multiple blocks of thetype of crystals. The invention provides a preparation method of a crystal and an application in realizing an optical depolarization device or an optical position phase piece by utilizing the crystal, therefore, the optical depolarization device or the optical position phase piece in the prior art is replaced, and various defects in the prior art are overcome.

Description

technical field [0001] The invention relates to the fields of laser and optics, in particular to optical crystals. Background technique [0002] The application of laser in communication, laser display and other fields has many advantages, such as: huge potential bandwidth capacity, high display brightness, good collimation, etc., as the application deepens, the disadvantages caused by the polarization of light and the same phase interference The impact is becoming more and more negligible. These effects include but are not limited to: polarization mode dispersion in optical fibers; polarization-dependent losses in passive optical devices, speckle (Speckle) effects in projection applications, etc. The use of depolarizers or phase plates is very effective in eliminating related problems. effective measures. Conventional depolarization methods mainly include diffuse reflection depolarization, scattering depolarization, making polarized light pass through a scattering...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C30B15/20G02B5/30
Inventor 吴砺凌吉武任策卢秀爱林江铭陈卫民
Owner SHANGHAI BRANCH FUZHOU GAOYI COMM CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap