When I shine a laser pointer at something, the point looks like it is made of a bunch of tiny dots, how is the laser diode different from a normal LED?
In: Technology
Speckle is the name of this phenomenon. It’s an inherent property of coherent light. My 1978 student job at the Optical Sciences Center in Tucson was helping a grad student understand it. I don’t think he ever got that far.
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