A laser beam shaping device using a double free-form lens

A technology of curved lens and laser beam, applied in the direction of lens, optics, optical components, etc., can solve the problems of not being able to achieve regulation at the same time, weak regulation ability, etc.

Active Publication Date: 2016-01-20
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Only the rear surface of the free-form lens beam shaper is a free-form surface, and the front surface is a plane, so only the intensity control of the beam is realized, and the phase adjustment cannot be realized at the same time. Compared with the double free-form surface lens shaper proposed by the present invention, Its control ability is weak

Method used

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  • A laser beam shaping device using a double free-form lens
  • A laser beam shaping device using a double free-form lens
  • A laser beam shaping device using a double free-form lens

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Embodiment

[0063] Such as figure 1 As shown, in the laser beam shaping device using a double free-form lens, the component LS is the light source of the system, and the component BE is a beam expander, which is used to adjust the cross-sectional size of the laser beam to avoid excessive concentration of the beam energy and meet the requirements of beam shaping Requirements for the cross-sectional size of the incident laser beam. The element FL is a beam shaper for deflecting the expanded laser beam to produce a predetermined intensity distribution and phase distribution.

[0064] The implementation process of the double free-form surface lens beam shaper in the laser beam shaper device of the present invention will be described in detail below with reference to specific examples.

[0065] It is assumed that the goal to be achieved by using a double free-form surface lens is: the parallel incident laser beam has a circular symmetric Gaussian distribution, and after being deflected by the...

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Abstract

The invention discloses a laser beam shaping device with a double-free-form surface lens. The laser beam shaping device comprises a laser beam, a beam expander and a beam reshaper which are sequentially arranged along a light path. The beam reshaper is the double-free-form surface lens which is provided with a front surface S1 and a rear surface S2. The laser beam shaping device with the double-free-form surface lens has a good beam shaping effect, meanwhile can achieve regulation and control of intensity distribution and phase distribution of laser beams, and is flexible in design and high in control capacity and energy utilization rate.

Description

technical field [0001] The invention relates to the technical fields of non-imaging optics and laser beam shaping, in particular to a laser beam shaping device using a double free-form surface lens. Background technique [0002] Laser has been widely used due to its advantages of high monochromaticity and high brightness. However, the Gaussian distribution of the laser beam and the hyperbolic propagation path limit its further wide application. In order to expand the application field of laser and improve the application level of laser technology, the laser beam must be shaped to meet the requirements of different occasions. [0003] Laser beam shaping refers to changing the intensity distribution of the incident laser beam to a predetermined intensity distribution, while adjusting the phase distribution of the beam to control its propagation path. Common laser beam shaping methods include aperture shaping, diffractive optical element shaping, and microlens array shaping. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/09G02B3/00
Inventor 郑臻荣张雅琴吴仍茂刘鹏王会会陈贝石申俊飞李海峰刘旭
Owner ZHEJIANG UNIV
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