The word "LASER" is an acronym for Light Amplification by the Stimulated Emission of Radiation. A laser beam produces photons of light with specific characteristics. These include:
- Monochromaticity - In laser light, all electromagnetic waves have the same wavelength and therefore, the same colour.
- Coherence - All the photons in laser light oscillate in the same phase.
- Directionality - Due to the coherence factor, light is also highly directional.
- Intensity - Because its radiation is coherently concentrated on one spot, laser light is very powerful. This factor gives it tremendous accuracy, making it highly valued in medical applications.
The theory was first described by Albert Einstein (1879-1955) who paved the way for the development of the therapeutic laser. The first low-level therapeutic laser was developed in 1962. By the end of the 1960's, Endre Mester in Hungary was reporting an improved healing of wounds through low-level laser radiation. Since then, scientists and doctors around the world have been using laser light as an alternative to prescription or over-the-counter medications that often have significant toxicity and adverse side effects. Over 2,000 clinical studies worldwide have proven the success of therapeutic lasers in the safe and effective treatment and healing for a wide variety of musculo-skeletal and other related conditions for all age groups.