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Hi, Im doing a presentation in school on lasers, and i have found a lot of information on the forums helpful. However, one question i could not find from searching the forum or from Sams laser guide is what makes laser diodes have a different wavelength. Is it the physical construction of the...

I'm thinking of buying a green laser, and i got some questions. Is a normal laser more likely to last longer than a pen laser, and what does it mean when the it is a "true" laser, or "factory-modded"?

what would be brighter, a 100mw "True" green laser, or a 150mw green laser?

Hey guys, i want to buy a green laser, but i don't know which one to get. I want a laser that is extremely visible during day/night, but burning capability doesn't matter. I would prefer if the laser was from Dealextreme, but if not thats okay, and around the $60 range. Thanks

Thanks for the help everyone!

I was thinking around $50-$100. And does anyone know if their is a store that sells these kind of things?

Do you know what store/site you can buy those from, and what housing it needs to have? are these the diodes i need? DealExtreme: $3.47 3W LED Emitter on Star (Multicolored RGB) DealExtreme: $4.61 1W 850nm IR LED Emitter on Star (3.2V~3.5V 350mA)

I'm rather new to this site, and i was wondering how much a 500mW-1W laser would cost. I also was wondering which type of laser is cheepest (CO2, Argon, or HeNe) Thanks