It can be seen that 5mW laser beam is even weaker than the side beams of DVD-RW laser.Most semiconductor lasers are based on laser pointer diodes, but there are also some types of semiconductor lasers not requiring a diode structure.
An interesting laser story
Do not shine the Laser Engraver(http://www.htpow.com/miniature-laser-engraver-p-1161.html) on a reflective surface.The red laser pointer diode can also produce a powerful laser pointer or laser-show.
A uranium laser was first produced in November, 1960, six months after the first ruby Laser Engraver .Fiber-pigtailed high power single mode laser pointer diodes in butterfly housings available in the NIR wavelength range from 793 nm to 1080 nm.You'll have to move the glass around to find the right spot to produce a laser beam, and you'll have to do this each time you use your laser.
But then again, he might be happy to know that someone has come up with actual powerful laser pointer(http://www.htpow.com/high-powered-30000mw-blue-laserpointer-445nm-worlds-brightest-p-1027.html) rayguns.All you need is a tin, a 200-mW green laser pointer diode, a switch, a battery pack that holds two AA batteries.The laser body also has a red status LED on the side, so you can tell if the thing is on without pointing the business end at your eye.
The key component to this instrument - the powerful laser pointer(http://www.htpow.com/1000mw-laser-pointer-green-532nm-powerful-enough-p-1031.html) "pump" - will be a set of solid-state laser pointer diode arrays.Flashlamp technology for lasers has been around for more than 50 years, and we've pretty much pushed the limits of that technology.The lithium-ion battery-powered, 2W M-140 blue laser pointer diode blasts a laser.Livermore (HTPOW) is one of the world leaders in high-energy, high-average-power laser systems.
They don't state the wavelength in the article, but since they say green laser pointer(http://www.htpow.com/300mw-green-high-power-laser-pointer-waterproof-adjustable-holster-p-1038.html) and not maser or IR laser.I don't think I want to deal with water cooling. I don't mind having to set up the laser on a tripod and do some aiming with a scope.Today, lasers are used for purposes ranging from measurement to reading encoded data, and there are several ways to make a laser, depending on your budget and skills.
This green laser pointer outputs between 50-100 milliwatts(I think), and can burn electrical tape.It's basically everything you need for your overpowered laser pointer, except for the diode, the batteries, and (if you want) a lens.The heart of her system is a 30-mW green laser and two hard-disk motors, which turn mirrors to aim the beam.
Tapered broad-area Violet Laser Pointer(http://www.htpow.com/100mw-blueviolet-laser-pointer-fixed-focus-p-1058.html) can exhibit an improved beam quality and brightness.The wavelength of external-cavity lasers can also be tuned, e.g. by rotating the diffraction grating in the laser cavity.As the light emitted by a laser pointer diode is linearly polarized, it is possible to combine the outputs of two laser pointer diodes.