Yes, we do have several threads here. Please use the search
function using the keyword "laser" to find them.
This venue is now over 6 yrs old and there are many informative posts from the past, that can be easily accessed to read valuable discussions.
The search function is at the top right of each index page of each forum here, and also on the upper bar of shortcuts that appears on each page.
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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