Laser parameter measuring device

Abstract

The invention relates to a laser measuring parameter device, including: the measured laser source, the reference laser source of the continuum laser which is used in launch as a reference standard, the diffuse reflectance imaging butt which is used diffusing the measured laser and the continuum laser, the image acquire device of the video frequency of the diffuse reflectance laser which is used in receiving the laser and the continuum laser, the image collection device of the gray image of the diffuse reflectance laser based on the video frequency signal of the laser and the diffuse reflectance laser, the laser spot diameter which storage continuous laser diffuse reflectance laser in the measured location, based on the gray image ratio of the laser and the diffuse reflectance laser and the laser spot diameter of the diffuse reflectance laser, get the control device of the laser spot diameter in the measured location, and laser display device which display the measured parameters. Using the invention, can be achieved the whole real-time measurement of the diameter spot beam parameters with the far field and the larger spot diameter.

Description

technical field [0001] The invention relates to the technical field of laser parameter measurement, in particular to a laser parameter measurement device. Background technique [0002] Due to the characteristics of good monochromaticity, high brightness, high density, strong radiation directionality and small divergence angle, laser has been widely used in scientific research, industry, national defense, medical treatment and other fields. In various applications, the parameters of the laser, such as: power, energy, mode, spot diameter, divergence angle, spot drift, power density change with time and space, divergence angle, pulse width (ie: pulse width) etc., there are strict requirements, which requires the measurement of laser parameters in advance. In the prior art, the measurement methods for pulsed laser parameters mainly include ablation method, scanning method, array detection method, imaging method, etc. These methods can only measure the spot radius and energy dis...

AI Technical Summary

Problems solved by technology

In the prior art, the measurement methods for pulsed laser parameters mainly include ablation method, scanning method, array detection method, imaging method, etc. These methods can only measure the spot radius and energy distribution of the near-field laser when the spot radius is small, and cannot Measurement of far-field laser parameters when the spot diameter is large

In national defense applications, it is often necessary to measure the parameters of the far-field laser when the spot diameter is large, and the existing measurement methods cannot meet this demand.

Images