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brilliant, visible beam...

Metalmaze

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Sep 14, 2019
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Hello, I was hoping some people could educate me a little bit. If I'm after a very bright, easy to see beam, what wavelength would work best? Also, does a brilliant beam mean extreme heat? Or is it possible to get a nice visible beam without burning everything in sight?
Next, are there goggles that work for every wavelength, or is it best to wear wavelength specific goggles?
Could anyone maybe suggest a setup for a green (preferably) laser, very visible beam, least hazardous beam for heat and eye damage? Is it possible to have a visible beam that doesn't even require goggles? very curious. Thanks for any information you may have! -Paul
 



Encap

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May 14, 2011
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532nm is the brightest visually. Is about 10X brighter visually than 445nm of the same mW output power.

If you want an excellent quality 532nm laser see: https://www.jetlasers.org/index.php?id_category=17&controller=category

You need good eye protection for any laser over 5mW. Get good laser safety glasses here: https://www.survivallaserusa.com/Safety_Goggles/cat1667093_1527285.aspx

Read up on laser hazards by output power level Class here: https://www.lasersafetyfacts.com/classes-menu.html
See laser hazard chart here: https://www.lasersafetyfacts.com/resources/FAA---visible-laser-hazard-calcs-for-LSF-v02.png

Burning: A laser beam has no temperature - there is no inherent "temperature" to a laser beam. Heat is the random motion of matter particles (atomic or molecular particles). A laser beam itself is not made of matter but of photons, which have no mass, thus a laser beam can have no temperature. "Heat" is caused by a laser beams energy being absorbed by a materials surface and turning light energy into heat energy.
"Burning": depends upon the ability of the target to absorb and convert the light energy of whatever wavelength to heat.
 
Last edited:

Alien Laser

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Oct 6, 2015
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All lasers require goggles all lasers over 1>mW are eye hazard unless you can find a 0mW laser the most visible would be 532nm and then 520nm it also depends on the mW, If this is your first laser the is a big responsibility!
 




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