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Device and method for producing space light spots array with multi-beam interference and multi-polygon interference

A technology of polygonal cones and polygonal mirrors, applied in optics, optical components, instruments, etc., can solve the problems of laser mode deterioration, laser power loss, and high production costs, and achieve high damage thresholds, simple use, and low production costs.

Inactive Publication Date: 2007-02-28
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a device and method for generating multi-beams using a polygonal pyramid mirror or a polygonal truncated mirror, which solves the need for precise optical path adjustment and stable experimental platforms, low transmittance, and The processing is difficult, the laser power will be lost a lot and the laser mode will be deteriorated, and the production cost is relatively high.

Method used

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  • Device and method for producing space light spots array with multi-beam interference and multi-polygon interference
  • Device and method for producing space light spots array with multi-beam interference and multi-polygon interference
  • Device and method for producing space light spots array with multi-beam interference and multi-polygon interference

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Embodiment 1

[0042] Using a He-Ne laser with a wavelength of 633 nm to irradiate a regular triangular pyramid with a base angle of 5 degrees, a periodic two-dimensional spot array as shown in FIG. 7 can be obtained. Using a He-Ne laser with a wavelength of 633 nm to irradiate a regular triangular table mirror with a base angle of 5 degrees, a periodic three-dimensional spot array as shown in FIG. 8 can be obtained.

Embodiment 2

[0044] Using a He-Ne laser with a wavelength of 633 nm to irradiate a regular quadrangular pyramid with a base angle of 2 degrees, a periodic two-dimensional spot array as shown in FIG. 9 can be obtained. Using a He-Ne laser with a wavelength of 633 nm to irradiate a regular quadrangular table mirror with a base angle of 2 degrees, a periodic three-dimensional spot array as shown in FIG. 10 can be obtained.

[0045] The coherent superposition of multiple plane waves in space will produce a two-dimensional or three-dimensional spatial light point array distribution. When the angle between the beams is small (<10°), it can be approximately considered that the polarization states of the beams are all the same. If the angle between the beams does not meet the small angle, the calculation must take into account the influence of the polarization state of each beam on the contrast of the interference light field. In order to explain the principle, here we only consider the case where the...

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Abstract

The invention relates to a device for using polygon axicon lens and polygon table lens to generate multiple beams of coherent light to interfere and form two-dimension and three-dimension optical grid, and relative method, wherein the laser beam of general laser via expanding and collimation is converted into parallel interference beams; the light enters into the bottom of positive polygon axicon lens or polygon table lens with special edge number and bottom angle, via split at each cone surface to be bended; each splitter beam will generate multi-beam interference to generate light point array at two dimensions or three dimensions; the angle of each beam is decided by the bottom angle, while the beam number is based on the edge number. The invention has simple operation, low cost, high damage threshold valve, and wide application.

Description

Technical field [0001] The invention relates to a device and method for using a polygonal pyramid mirror and a polygonal table mirror to generate multiple beams of coherent light to form two-dimensional and three-dimensional optical lattices. Background technique [0002] A photonic crystal is a two-dimensional or three-dimensional periodic microstructure formed by a high refractive index contrast material with a wavelength order of magnitude. It can produce a specific photonic band gap, and when light propagates in it, many peculiar phenomena will occur. Therefore, it has very attractive application prospects in the fields of optical waveguide, optical storage, and optical communication. The production of photonic crystals in the visible to near-infrared band is currently a key research direction. There are many preparation methods, such as semiconductor lithography, ion beam etching, chemical etching, laser micromachining, etc., but these methods require expensive equipment . B...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/10
Inventor 雷铭姚保利
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI