Last month we had the pleasure of bringing you [FireMyLaser’s] green laser spirograph. Just green is great for a while, but why not add red and blue for a full spectrum of color! [c4r0] steps… ...

Using a green laser beam, a ruby crystal, and blue light illumination, they demonstrated that light, under specific conditions, could block another light source, creating a visible shadow.

Just green is great for a while, but why not add red and blue for a full spectrum of color! [c4r0] steps in at this point to bring us his red green blue laser .

First, they don't look too bright. This is probably because our eyes are not too sensitive to this wavelength. The blue 10 mW does not look anywhere near as bright as the 5 mW green that I used in ...

So while red lasers are sold for pennies on street corners, and blue lasers are now mass-produced for Blu-ray players, creating green lasers takes some backdoor thinking.

Laser diodes are even more finicky and cannot tolerate so many defects. The highest wavelength thus far achieved in a laser diode is 488 nm, in the blue-green (or cyan) part of the spectrum.

The Laser Turns 50! From 'Death Ray' To The Supermarkets : 13.7: Cosmos And Culture My son's laser project — building a blue laser pointer — made me reflect upon the history of this invention ...

Armed with blue, green and red lasers, ... These are also now cheap. You can get one for around $10. Here is what happens when I shine the blue laser around on stuff: ...

A monolithic heterostructure nanosheet composed of a ZnCdSSe multi-segment quaternary alloy can simultaneously emit laser light in the red, green and blue. ... the spontaneous emission background.

That little hunk of frost-coated hardware in the photo is the Spyder III Pro Arctic blue handheld laser. It's being marketed as the closest thing to real-life Star Wars lightsaber ever. Because ...