r/lasers

8.1K archived posts · Dec 2009 – Sep 2026

Reddit - Lasers

r/lasers

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Created Dec 10, 2009

8.8KMembers (last snapshot)

8.1KArchived posts

##Welcome to r/Lasers! Discuss anything and everything related to lasers. Whether it be gas lasers, laser shows, laser pointers, dye lasers or anything else with a laser it's welcome here!

Our exception to this is creating items with laser cutters. While we love the tech behind the scenes, those posts belong on r/LaserCutting.

Rules

No advertising with a post.
No flame baiting
No encouraging unsafe use of lasers

#Eye protection sources

LaserGlow Goggles

#What laser/where should I buy? For a partial list of distributors and some insightful comments about them, check out this post on LaserPointerForums.com. We cannot guarantee the accuracy of the information, but it should help you make a better informed decision.

Reading Material

Related Subreddits

#Safety tips

Never look into the beam of any laser.
Wearing a set of proper laser safety goggles is a good idea when working with any laser but especially for those rated Class IIIb or higher.
Be aware of the wavelength(s) and power of your laser(s).
Always terminate the laser beam with a light absorbing material or diffuse screen.
Clearly mark the path of the beam and provide barriers to prevent accidental contact with eyes (all lasers) and other body parts (high power lasers).
Follow all relevant electrical safety precautions.
Provide a 'kill' switch in an accessible location away from the laser.
Put appropriate laser safety and electrical safety warning/danger stickers near the laser emission aperture and other beam path locations, on the laser, and on power supply components.
Instruct anyone else with you as to the hazards of laser light and make sure they understand all of these guidelines. Those with you may actually be in MORE danger because they will be looking toward the direction of the action while you will know what to expect and avoid.

Thank you krusader42 for the logo!

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