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Beam Quality and Strehl Ratio

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Beam Quality and Strehl Ratio

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In order to accurately predict the real-world performance and quality of a laser, it is necessary to understand the laser’s M2 factor, which describes the quality of the beam. Once the laser’s performance is known, defining the true performance of any optical system used with it will allow for an understanding of the final system performance. Comparing the real performance of an optical system to its ideal, diffraction-limited performance is done by using the Strehl ratio.

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