How to make a collimator

Fiber collimator is an important component in optical passive devices, plays an important role in the field of laser and optical communication, and is also the basis for the manufacture of other miniature optical passive devices, such as polarizers, isolators, Optical splitters, filters, optical switches, etc. In practical applications, lasers are widely used because of their high brightness, good monochromaticity, and good directionality. However, the spot size emitted by ordinary fiber collimators is usually within 1mm, but in practice, a collimated beam with a larger beam diameter is often required, so it is often necessary to collimate the beam output from the fiber and pass through a complex beam expander system. Beam expansion and collimation are performed to obtain a parallel beam with a larger spot size.
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Author:X Ray Collimator