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What’s the Intensity Distribution of Laser?

What’s the Intensity Distribution of Laser?

Nov 20, 2020

In optical physics, the intensity I, e.g. of a laser beam at some location, is generally understood to the optical power per unit area, which is transmitted through an imagined surface perpendicular to the propagation direction. ... The intensity is the product of photon energy and photon flux.


Generally speaking, the laser intensity distribution is divided into Gaussian Intensity Distribution and Uniform Intensity Distribution.


Gaussian Intensity Distribution


Gaussian beam is an electromagnetic wave beam whose transverse electric field and irradiance distribution approximately satisfy the Gaussian function. Many lasers approximately satisfy the conditions of a Gaussian beam. In this case, the laser propagates in the TEM00 mode (transverse fundamental mode) in the optical cavity.


All Laser Modules are based on laser diodes, which exhibit a Gaussian intensity distribution of the emitted light. Thus the line also has a Gaussian intensity distribution. For most laser line generators this Gaussian intensity distribution is clipped by an aperture with an edge intensity. The edge intensity depends on the laser line series and the laser diode within the laser module. It can be seen in the technical data of each laser module.

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Uniform Intensity Distribution


Lasers with uniform intensity distribution have an almost constant intensity and thus provide a constant power density along the laser line. However if you look closely, it is Gaussian, but it is clipped by an aperture with a large edge intensity of type. 80 % or higher. The edge intensity depends on the laser line series and the laser diode within the laser module. It can be seen in the technical data of each laser module.

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Where can I buy the thinnest uniform line laser?


Uniform Line Laser

As one of the leading industrial laser module manufacturers and suppliers in China,

Elite’s uniform intensity distribution “Special Lens” Lasers with the exclusive patent is the best choice for Machine Vision, 3D Scanning, and Measurement. The unique design and technology provide uniform intensity and uniform line width. We warmly welcome your any requirements about lasers. Contact us at sale@s-laser.com or 86-29-68590616 for quotation or sample.