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I have the problem of making "at home" or almost, a measure of a laser's pulse energy for unit area of the target: those kinds lasts for ~ tens of milliseconds, up to some hundreds of ms and I should be able to verify that this energy "density" doesn't go beyond 40 J/cm^2 for a single pulse (required by local laws concerning aesthetics lasers).
What could be a not very expensive way to do it?
Thanks
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lightarrow
What could be a not very expensive way to do it?
Thanks
--
lightarrow