• 66e3038f2b05fe765f0555db Far Field Without Despeckler2
    1. White Papers

    A Comparison Study on Laser Speckle Reduction

    Most surfaces can be considered rough on the scale of optical wavelength, leading to a contrast in the intensity seen. This leads to the appearance of speckle, which must be eliminated to mitigate adverse effects.

    When inspecting a spot illuminated by laser light, you may notice a granular-like pattern. The pattern, known as speckle, is due to fluctuations in the intensity of the light hitting the spot. While speckle is easy to see with the naked eye, it is important to make quantitative measurements of how much speckle a laser spot has, to quantify the effectiveness of a despeckler system. Speckle contrast is a standard way that laser speckle is measured. In this study, we compare two different commercial laser de-speckling products for fiber optic systems. 

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