Enclosed Type

The wavelength of the laser cutting quality

by：Transon 2020-10-28

Work is similar to the laser cutting machine tool cutting, the depth of focus is equivalent to the length of the blade, the laser power is equivalent to the size of the force. Laser focal depth is given the necessary condition of laser cutting and the depth of focus and provide sufficient conditions for the combination of laser power. In theory, cutting thickness should be determined by the laser gaussian beam, Rayleigh area. Rayleigh area in industry it is called the depth of focus, its physical expression for which the status of the laser wavelength; F focusing lens focal length; D for focusing lens diameter. While in other conditions the same situation, focusing on the smaller spot diameter, the greater the power density, the heat affected zone is smaller, the narrower the seam width, the better cutting quality. Using actual fundamental mode laser beam focusing lens will focus on the small spot diameter can be approximated by diffraction determined by the waist spot diameter and determined by the poor through image in small dispersion and the diameter of the circle.

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