Laser Technology Laser light is a very amazing and wonderful phenomenon of nature and science. Laser light systems can be very expensive and can produce absolutely phenomenal displays not found with any other medium. The laser has no rival for its brightness and beauty. New led laser devices are being developed at low cost and low power needs without the previous critical cooling requirements. A new century is opening to laser light technology.
Laser light is static, like the light emitted from a standard bulb.
So to create images, we need a device to move the laser beam. This is like a small motor that moves a little mirror which the laser beam is reflected off, to change the laser beam position. The beam deflection is proportional to the intensity of the signal applied to the scanner amplifier. There are different ways to do this. Basically we need to generate 2 signals, one for the horizontal movement, and one for the vertical.