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Embedded type laser beam quality measuring device

A technology of laser beam quality and measuring device, applied in measuring device, using optical device, optical radiation measurement, etc., can solve the problem of continuous adjustment of laser light intensity and other problems

Inactive Publication Date: 2010-02-10
CHANGCHUN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Although this method can obtain corresponding effects, it cannot continuously adjust the laser light intensity.

Method used

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  • Embedded type laser beam quality measuring device
  • Embedded type laser beam quality measuring device
  • Embedded type laser beam quality measuring device

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Embodiment 1

[0049] The embedded laser beam quality measuring device of the present invention comprises three parts: optical unit 1, mechanical unit 2, and electronic unit 3; described electronic unit 3 is connected with mechanical unit 2 through camera 45, stepping motor 44; The laser beam emitted by the laser is incident on the camera 45 of the electronics unit 3 through the optical unit 1, and the stepping motor 44 of the electronics unit 3 drives the lead screw 93 of the mechanical unit 2 to perform one-dimensional horizontal movement;

[0050] as attached figure 1 As shown, the composition of the optical unit 1 is composed of a liquid crystal dimming unit 5, a plano-convex lens 6, a plane mirror 7 and a plane mirror 8; Placed, the laser beam emitted by the laser is focused and narrowed by the plano-convex lens 6, reflected by the plane reflector 7 and the plane reflector 8 with a reflectivity of 99%, and then continuously attenuated by the liquid crystal dimming unit 5, and is control...

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PUM

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Abstract

The invention provides an embedded type laser beam quality measuring device, which comprises an optical unit (1), a mechanical unit (2) and an electronics unit (3). The embedded type laser beam quality measuring device images laser faculae by using a camera 45, controls and samples laser faculae information of a plurality of positions by a digital signal processor 42; an embedded process ARM 11 41runs software 69 of the embedded type laser beam quality measuring device to perform laser faculae image processing and calculate a beam quality factor M<2>, a beam-width product, a beam-waist radiusW and an far-field beam divergence angle theta; and the measurement accuracy of the laser beam quality reaches + / - 6 percent. The embedded type laser beam quality measuring device has the advantagesof having small volume and convenient use, and avoiding a personal computer in work.

Description

technical field [0001] The invention relates to an embedded laser beam quality measuring device. Background technique [0002] With the continuous development of laser technology and people's continuous development and improvement of high-tech products, the application of laser technology is getting deeper and deeper into people's daily life. Laser—an active light source that has only been developed in recent decades—has the characteristics of monochromaticity, coherence, good directionality and high intensity, and is widely used in military, civilian, industrial, scientific research and medical fields. The laser beam quality is an important criterion to measure the performance of laser products. Researching and measuring the spatial energy distribution of laser beams, and giving a scientific evaluation of the quality of laser beams are of great significance to the design and application of lasers. In recent years, how to use a simple, accurate and practical method to meas...

Claims

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Application Information

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IPC IPC(8): G01J1/00G01B11/08G01M11/02
Inventor 王彩霞王晓曼王菲景文博刘树昌赵海丽
Owner CHANGCHUN UNIV OF SCI & TECH
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