Optical system for generating approximate diffraction-free zero-order Mathieu beam

An optical system, non-diffraction technology, applied in the field of optical systems, can solve the problems of low utilization rate of light energy, high cost, high equipment cost, etc.

Inactive Publication Date: 2014-04-30
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the computer holography method needs to use a computer and a spatial light modulator, which is costly and complex. The laser resonator method is difficult to debug the laser cavity and

Method used

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  • Optical system for generating approximate diffraction-free zero-order Mathieu beam
  • Optical system for generating approximate diffraction-free zero-order Mathieu beam
  • Optical system for generating approximate diffraction-free zero-order Mathieu beam

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Embodiment Construction

[0016] In order to further explain the technical solution of the system of the present invention, the system of the present invention will be described in detail below through specific examples.

[0017] A kind of optical system that produces approximate non-diffraction Mathieu beam of the present invention, as figure 1 As shown, it includes an optical platform 1, a laser 2 positioned on the optical platform 1 supported by a fixed bracket 7, a cylindrical lens 3, a short focal length lens 4, a long focal length lens 5 and an axicon 6. The laser 2 is arranged on the optical platform 1 through the fixed bracket 7, and the cylindrical lens 3, the short focal length lens 4, the long focal length lens 5, the axicon 6, and the microscope and CCD camera system 8 are placed in sequence along the laser light path of the laser 2.

[0018] Laser 2 adopts He-Ne laser.

[0019] The cylindrical lens 3 is a convex cylindrical lens.

[0020] The short focal length lens 4 is near the focal p...

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Abstract

The invention discloses an optical system for generating an approximate diffraction-free zero-order Mathieu beam. The optical system for generating the approximate diffraction-free zero-order Mathieu beam comprises an optical platform, a laser device is arranged on the optical platform, and a cylindrical lens, a short focal length lens, a long focal length lens and an axicon are arranged along the light path of the laser device, wherein the short focal length lens is arranged nearby the focus of the cylindrical lens, and the focus of the short focal length lens and the focus of the long focal length lens are overlapped. The optical system can generate the approximate diffraction-free zero-order Mathieu beam, and provides a simple and effective new approach for obtaining the zero-order Mathieu beam. The beam can be applied to the fields of laser material processing, collimation measurement, optical wireless communication and the like.

Description

technical field [0001] The invention relates to the field of optics, in particular to an optical system for generating an approximately non-diffraction zero-order Mathieu beam. Background technique [0002] The concept of the non-diffraction beam was proposed by Durnin in the United States in 1987, and it has received a lot of attention because its light intensity distribution in the propagation direction does not change with the propagation distance. The non-diffraction beam is a set of special solutions to the space free scalar wave equation. The well-known Bessel beams (Bessel beams) are a set of solutions of the wave equation in the cylindrical coordinate system. If the wave is solved in the elliptic cylindrical coordinate Equation, you can get another set of solutions, which is Mathieu beams (Mathieu beam). Like non-diffraction Bessel beams, Mathieu beams can also be used in optical measurement, optical plate making, medical imaging, nonlinear optics and optical wirele...

Claims

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Application Information

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IPC IPC(8): G02B27/09
Inventor 吴逢铁李冬
Owner HUAQIAO UNIVERSITY
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