What is a Laser and how does Laser Light differ from daylight?
A. A laser is a device that emits a special form of light. Laser light consists of light waves of a single wavelength in which all the waves reinforce one another, called COHERENCE. If you imagine heavy surf with large waves breaking on a beach instead of many small waves, you get a sense of COHERENT light. The term LASER is an acronym for Light Amplification by Stimulated Emission of Radiation. Radiation in this case refers to the coherent light energy released, which produces the laser beam. In contrast, normal daylight is incoherent light. It consists of all of the colors of the rainbow, with wavelengths from 400 nanometers (nm), where the light is a blue color, to the rich, red wavelengths of 750 nm. Our Respond Laser Therapy System generates light at a wavelength of 904 nm; in the infrared spectrum, where laser light is invisible to the naked eye.
