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A simple Calcium carbonate crystal, I will change the sentence as to not sound like I am producing a dpss laser. “CaCO3 lit by blue laser”.

This is a pretty long (14in?) piece of stalactite that I appropriated myself from a caving excursion. The stalactite is being exited by a 700mw 460nm laser. Looks like a fricken lightsaber.

It could be due to cone fatigue, the oversaturated narrow color range and power of a laser beam probably fatigues your eye’s cones much faster than that of normal light.

Seeing as I’m In my second year, probably not, in addition I would need to pass a electrical PE exam to properly licensed in New York to disseminate any legal education.

Amazing, So collimated photons directly hitting the retina is what does it in.

Yes, it was actually my interest of optics and lasers that kinda steered my choice of micro-electrical engineering It was either that or programming.

What would be the safest yet most visable milliwattage to work with? Should I also try 630nm and IR filter? I have heard that they are a more intense red and I’ve seen people “fix” their lasers leaking IR light.

Firstly, thank you for your concern, I’m interested in color (colour for you) profile, single mode, low divergence and decent wattage. I don’t really care for high powered burners because I don’t really understand the safety hazards of such high powered beams. Exotic diodes is what I’m hoping to...

Thank you, didn’t mean to come off as “needy”, I just didn’t really know where to start in this great lexicon of lasers. However, just by visiting the DTR shop I’ve expanded a little bit of my knowledge of the quality of products.

Hello, i’m a new member. I’m from New York, particularly near the Great Lakes region. I currently am studying to become a micro-electrical engineer. I joined this fine establishment to become educated, in all manners, of lasers and maybe build a few. Thank you, and have a good one.

New member, From New York, interested in building lasers and learning their mechanics. Currently studying to become an electrical engineer.

Hello, I'm a little new to lasers, but I'd like to build my own; Preferably I'd like something that a, somewhat, mentally challenged monkey could build without much hassle and could teach (the mentally incapacitated monkey) some of the basic mechanics, techniques, etc. of lasers. Please put any...