How to...

comozo

Enlightened
Joined
Jun 30, 2003
Messages
568
"It is important to note that extremely high power densities are achieved at the focal point of a concentrated laser beam. A 10-milliwatt beam focused to a diffraction-limited spot 0.22 micrometers in diameter results in a power density of approximately 30-million watts per square centimeter. Such high energy levels can rapidly degrade or destroy lens and filter coatings, as..."

Never would have guessed that much.

Link http://www.olympusfluoview.com/theory/confocallaserintro.html
 
Strange that you should mention this. I was trying to track down a video of a multi kilowatt laser that had enough energy to break down the components of the air it "passed" through. /ubbthreads/images/graemlins/wink.gif

Im glad to see someone else "gets it". I have spent many hours trying to explain this to people. /ubbthreads/images/graemlins/wink.gif
 
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