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Arbitrary wavelength semi-Gaussian laser beam generator

A laser beam and generator technology, applied in the laser field, can solve the problems of semi-Gaussian laser beam derivatization, etc., and achieve the effects of stable transmission characteristics, low cost, and easy processing.

Active Publication Date: 2015-09-16
EAST CHINA NORMAL UNIV
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Problems solved by technology

In addition, the semi-Gaussian laser beam generated by this technology will undergo derivation when it is transmitted in free space.

Method used

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  • Arbitrary wavelength semi-Gaussian laser beam generator
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  • Arbitrary wavelength semi-Gaussian laser beam generator

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Embodiment Construction

[0016] The specific implementation manner of the present invention will be described in detail in conjunction with the technical scheme and the accompanying drawings.

[0017] Take the helium-neon laser with a wavelength of 632.8nm as the incident laser light source as an example:

[0018] (1) The design of the coherence attenuator implemented by the present invention is as follows:

[0019] It is planned to use the knowledge of optical principles and the processing method of wave optics to theoretically analyze the basic principle of the invention to generate the semi-Gaussian laser beam. The coordinates of the plane where the coherence attenuator and the opaque sheet (blade) are defined are (x 0 ,y 0 ,0), the coordinates of the plane of the space at distance z behind the blade are (x,y,z). The complex amplitude U of the light field of a collimated Gaussian beam incident on the plane of the coherence attenuator 0 (x 0 ,y 0 ,0) is:

[0020] U ...

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Abstract

The invention discloses arbitrary wavelength semi-Gaussian laser beam generator, belonging to the laser beam shaping technology field. The arbitrary wavelength semi-Gaussian laser beam generator consists of an incident laser light source, a collimator system, a coherence degree attenuator, and a non-transparent sheet (blade). The laser beam shaping method comprises steps of transmitting parallel light which is converted by an incident laser light source through the collimator system to the coherence degree attenuator, and using the non-transparent sheet (blade ) to cut half of the light outputted from the coherence degree attenuator, wherein the outputted light beam is the semi-Gaussian laser beam which is transmitted stably in the space. The advantages of the invention are that only one coherence degree attenuator and the non-transparent sheet (blade) can realize the generation of the semi-Gaussian which can be stably transmitted in the free space, that the generator has no preference for the wavelength of the incident laser source, the light beam transmission is stable, the application range is wide and the laser beam generator is solid and the operation is easy.

Description

technical field [0001] The invention belongs to the field of laser technology and relates to laser beam shaping technology, specifically a semi-Gaussian laser beam generator with any wavelength, which is suitable for laser physics, atomic and molecular optics, biophysics, quantum information, optical measurement and detection, etc. that require asymmetrical laser beams field. Background technique [0002] Half-Gaussian laser beam is a special asymmetric laser beam, its transverse spatial light intensity distribution is half-Gaussian in one direction, and Gaussian in the other orthogonal direction. Since the advent of lasers in 1960, related technologies have been continuously updated, and lasers have been widely used in human production and living activities. Conventional fundamental mode output lasers and related technologies and theoretical researches have developed rapidly, and the application fields of lasers have been fully expanded and improved day by day. With the r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/09
CPCG02B27/0927
Inventor 叶张东尹亚玲方彬茅志翔夏勇郭超修印建平
Owner EAST CHINA NORMAL UNIV
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