Category : Laser components, systems, equipment and applications > Laser accessories

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Laser Beam Expanders are designed to decrease the beam spot size at large distance. The reverse Galilean telescope design provides a certain angular magnification, called the Expander Power. The beam diameter is first increased in size by this power and then the beam divergence is reduced by the same power. This combination yields a beam that is not only larger, but one that is also highly collimated. The result is a smaller beam at a larger distance when compared to the laser alone(Equation). In addition, an expanded beam can yield smaller spot sizes when used in combination with additional focusing optics. This is very useful in focusing optimization. However, many applications simply require a larger continuous beam.

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- Laser accessories
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