Silica nanoparticle brick array polarizing beam splitter

Abstract

The invention discloses a silica nanoparticle brick array polarizing beam splitter, and belongs to the field of micro-nano optics and polarizing optics. The silica nanoparticle brick array polarizing beam splitter comprises a transparent substrate and silica nanoparticle brick arrays evenly distributed on the transparent substrate. Silica nanoparticle bricks are cuboid. The arrangement directions of the silica nanoparticle bricks are the same. When incident light perpendicularly enters the silica nanoparticle brick array polarizing beam splitter, light in the polarization direction along long edges and short edges of the silica nanoparticle bricks is reflected and transmitted. The silica nanoparticle brick array polarizing beam splitter can enable one kind of linearly polarized light to be fully transmitted and the other kind of linearly polarized light to be fully reflected, wherein the two kinds of linearly polarized light are perpendicular to each other in the polarization direction. Accordingly, light in the two polarization states is completely separated, and meanwhile the direction of an optical axis is not changed. The silica nanoparticle brick array polarizing beam splitter can adopt a manufacturing method of a binary optical device, is easily copied and produced on a large scale, and has the advantages of being good in beam splitting effect, small in size, low in weight, compact in structure, easy to integrate and capable of conforming to the development trend of the optical element.

Description

technical field

[0001] The invention relates to the fields of micro-nano optics and polarization optics, in particular to a silicon nano-brick array polarization beam splitter. Background technique

[0002] The control of the polarization state is very important in many optical systems, especially in engineering optics, researchers often need to obtain, test and measure the polarization characteristics of light, change the polarization state, and use the polarization characteristics to perform some physical quantities Measurements, etc., and devices that can generate and examine the polarization state of light are essential in these studies. Among them, the polarization beam splitter is one of the most important polarizing devices. It can separate the light waves of two polarization states whose polarization directions are perpendicular to each other. Key devices in information processing and many other applications.

[0003] Traditional polarization splitting devices are ...

Images