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* Far Infrared (~10micron) - Primarily useful for cutting. Safer than other Class IV lasers, as retinal damage is limited by opaque eye lens. See HacDC [[:Category:LaserCutter]] .
* Far Infrared (~10micron) - Primarily useful for cutting. Safer than other Class IV lasers, as retinal damage is limited by opaque eye lens. See HacDC [[:Category:LaserCutter]] .
* Near Infrared (~1micron) - Primarily useful for cutting. Dangerous invisible laser beam, any viewing is blinding. - http://www.ebay.com/itm/New-905nm-13W-high-power-infrared-ray-Laser-Diode-to-measure-cloud-distance-/271521597693?pt=LH_DefaultDomain_0&hash=item3f37f2c8fd
* Near Infrared (~1micron) - Primarily useful for cutting. Dangerous invisible laser beam, any viewing is blinding. - http://www.ebay.com/itm/New-905nm-13W-high-power-infrared-ray-Laser-Diode-to-measure-cloud-distance-/271521597693?pt=LH_DefaultDomain_0&hash=item3f37f2c8fd
* UV - Useful for photolithography, high-precision cutting, fluorescent illumination, and more. Extremely dangerous, any viewing is instantly blinding. - http://www.ebay.com/itm/2W-445nm-M140-Blue-Laser-Diode-in-Copper-Module-W-Leads-405-G-2-Lens-/180948106909?pt=LH_DefaultDomain_0&hash=item2a2158fe9d http://www.ebay.com/itm/2W-Copper-445nm-M140-Blue-Laser-Module-W-X-Drive-405-G-2-Glass-Lens-/180950109519?pt=LH_DefaultDomain_0&hash=item2a21778d4f
* UV - Useful for photolithography, high-precision cutting, fluorescent illumination, and more. Extremely dangerous, catastrophic non-thermal retinal damage, any viewing is instantly blinding. - http://www.ebay.com/itm/2W-445nm-M140-Blue-Laser-Diode-in-Copper-Module-W-Leads-405-G-2-Lens-/180948106909?pt=LH_DefaultDomain_0&hash=item2a2158fe9d http://www.ebay.com/itm/2W-Copper-445nm-M140-Blue-Laser-Module-W-X-Drive-405-G-2-Glass-Lens-/180950109519?pt=LH_DefaultDomain_0&hash=item2a21778d4f

Revision as of 15:27, 16 July 2014


Lasers

Highly Safe (1mW)

Under some unusual conditions (eg. microscope viewing), extremely low optical power is appropriate to minimize risk.

Safe (5mW)

Low power lasers (<5mW) are eye-safe, useful for manual alignment, HUD prototypes, etc.

Moderate (~200mW)

Medium power lasers emit a beam powerful enough to cause severe permanent retinal damage if directly viewed. However, at substantially less than Class IV power, indirect viewing (ie. spot on wall, specular reflections, etc) is relatively safe. This compromise can be useful to illuminate large areas, project a near-daylight visible green beam under standard atmospheric conditions, and burn some darkly colored objects.

High-Power Class IV

Above 0.5W, even indirect viewing is immediately blinding. Extremely dangerous, must be used with safety glasses and/or other shields. Use is generally restricted to HacDC members with safety training.

Despite the risks, high-power lasers are often necessary and justified for cutting, sintering, photoexposure, LIDAR, ICF, etc.

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