http://en.wikipedia.org/wiki/Laser_diode
(http://upload.wikimedia.org/wikipedia/commons/thumb/d/d9/Diode_laser.jpg/250px-Diode_laser.jpg)
(http://upload.wikimedia.org/wikipedia/commons/thumb/5/5b/Laser_diode_array.jpg/250px-Laser_diode_array.jpg)
Here is what we're talking about.
did you see the License information on this
"This work is in the public domain in the United States because it is a work of the United States Federal Government under the terms of Title 17, Chapter 1, Section 105 of the US Code. See Copyright.
Note:
This only applies to works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision."
http://en.wikipedia.org/wiki/Image:Laser_diode_array.jpg
