Device and method for improving distribution uniformity of laser output energy

A technology of uniform distribution and output energy, applied in the field of optics, can solve problems such as uneven distribution of light source output energy, achieve high uniformity of energy distribution, low light loss, and improve the uniformity of energy distribution

Pending Publication Date: 2017-12-26
YUNNAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The purpose of the present invention is to provide a device and method for improving the uniformity of laser output energy distribution, which solves the problem of uneven distribution of light source output energy

Method used

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  • Device and method for improving distribution uniformity of laser output energy
  • Device and method for improving distribution uniformity of laser output energy
  • Device and method for improving distribution uniformity of laser output energy

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Embodiment

[0054] In this embodiment, the light source is laser. image 3 Given the fiber-free optical path ( figure 1 (a) Original image and image after uniform energy. Turn on the laser 1, the laser beam expands and collimates through the microscope objective lens 2 and the lens 3, and then passes through the deformable mirror 4 and the swing mirror 7. At this time, there are two situations: (i) the deformable mirror and the swing mirror are in a static state, which is quite on the two mirrors. At this time, the light spot output by the swing mirror 7 is the original image image 3 (a); (ii) During the exposure time of a single image, the deformable mirror 4 performs multiple random deformations, and at the same time, the swing mirror 7 swings at a higher frequency to stabilize the image spot and output the image image 3 (b).

[0055] Figure 4 Given the fiber optical path ( figure 1 (b)) The original image and the image after uniform energy. Turn on the laser 1, the laser be...

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Abstract

The invention discloses a device and method for improving the distribution uniformity of laser output energy. The device comprises a collimation system, a diaphragm, a lens, an optical fiber, a deformable mirror, a swing mirror, a detector and a calculation analysis system. The laser energy distribution is randomly changed by utilizing the deformable mirror, and meanwhile, the position of a speckle is stabilized by utilizing the swing mirror system. By means of the device, the distribution uniformity of laser output energy and other light source output energy is improved, and the device has the advantages of being small in light loss and high in energy distribution uniformity.

Description

technical field [0001] The invention belongs to the field of optical technology, and designs a device and method for improving the uniformity of laser output energy distribution. Background technique [0002] As a light source with high brightness, high coherence and good monochromaticity, laser has been widely used in fields such as laser display, inertial confinement fusion and astronomical spectrometer calibration. These application fields have higher requirements on the uniformity of laser energy distribution. However, when the laser is transmitted in the system, it is easy to form interference fringes due to its good coherence; at the same time, when the interface in the optical path has an irregular structure comparable to the wavelength scale, it is easy to produce a speckle structure with spatial intensity fluctuations, resulting in uneven energy distribution. Uniformity seriously affects the scope of use of the laser. [0003] For example, in the field of laser di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/09G02B27/48
CPCG02B27/0927G02B27/0955G02B27/0977G02B27/48
Inventor 许良常亮王晓丽张居甲丁永超王咸奇
Owner YUNNAN ASTRONOMICAL OBSERVATORY CHINESE ACAD OF SCI
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