Laser is short for Light Amplification by Stimulated Eimission of Radiation. Lasers is basicly made of an active medium that is emitting light when it's so called pumped with energy. This pumping can be electricity, or external light. When a medium is active, such as when a HeNe gas is pumped with electric charge, it radiates light. This light is then placed between two parallell mirrors which makes a virually infinite number of copies of this light between those two mirrors. In the directions angular to these mirror, the light from the HeNe gas is amplified by allowing the photons go back and forth between the mirrors. However, when the HeNe gas is pumped with a seretain amount of energy, there is more active gas-molecules than those inactive which is absorbing the light. This is called the lease threshold, from which point allows the light to be amplified instead of absorbed by its own HeNe gas. So from this point the laser starts to radiate laser light. Some of this light must exit one of the mirrors, so one mirror is not fully reflective, but maybe 90% or so. These lasers is called gas-lasers. Also low efficient lasers. Typically 5 - 10% efficiency. Light pumped solid state laser: A chrystal is pumped with external light. This can be a ruby-chrystal. The ruby, especially synthetic ruby, is a very florucent chrystal that emitts light in all directions when exposed to external high energy light. A flashlamp where most possible of the emitting light is focused into the chrystal, the chrystal will absorb high energy photons, and "convert" these shorter wavelegths into the longer red spectrum wavelenth. The ruby is also placed between two parallell mirrors. See first section for explanation. Diode pumped laser (lets take the green 532nm laser): Also called Yag laser. A laser diode is focused into a chrystal that converts the 808nm laser diode light into 1064nm light (Not visible). This 1064nm light is then radiating another chrystal which is a non linear chrystal. When exposed to this 1064nm light, this chrystal will distort the wavelength by emitting a 2.nd harmonic distortion of the 1064nm light. A 2.nd harmonic distortion is a frequency which is the doubble of the main frequency. Therfor this chrystal will emit 532nm light. Polished ends of this chrystal will reflect the 532nm light to amplify it. Infrared radiation such as 808nm and 1064nm light is filtered to allow only the green 532nm light to pass through the laser apperture. These lasers is very efficient. Typically more than 50% of input energy is radiated as laser light.
Point and shoot. The operator projects a dot of laser light on the target. Something similar like you can do yourself if you have a laser pointer. In the bomb there are sensors that detect this projected dot on the target, and thus keep flying towards it, until it collides with it...
DC Controller
Xerographic photocopier, laser, computer based controller.
1982The Commercial Laser Tag IndustryIn 1982, entrepreneur George A Carter III—inspired by Star Wars—created the first scored arena-based laser tag game. Two years later, he opened the first Photon laser tag center, in Dallas. Multiple locations soon followed, and the rise of commercial laser tag was officially underway
many hads make light works!?..
Laser Light is Make special Effect that will more Highlight comminity which in light and taking a good idea
That's one of the properties necessary to consider a source of light as a laser source.The light rays in a laser are manipulated so as to make them coherent.
a laser light with a holograph is a laser light with holograph.
The waves get wider and dimmer as they move.
No. Laser light is coherent. Light bulb light is not.
No. Unless the LED is specifically a laser, you can not make it focus like a laser by putting it in a housing. A laser produces coherent light, which is why it acts like a beam. A normal LED is not coherent, and you can not make it so. Although you can not make a collimated incoherent light beam able to travel similar distances as a collimated laser beam, you can collimate incoherent light into a beam which would travel some distance with a small amount of divergence.
I.ncrease the wavelength of the light
No. Laser light is artificial light, but it is not sunlight.
Light amplification by stimulated emission of radiation(LASER or laser)
A laser beam consists of a single frequency of light, therefore it cannot form a spectrum or rainbow.
laser light rays don't spread and torch light ray's do
They are changed by a lens in the light machine, They have a white bulb and change the slides to pass through the tiny holes to make it seem as if it was a laser.