LASER (Light Amplification by Stimulated Emission of Radiation), is a mechanism of emitting
electromagnetic radiation typically light as a process of stimulated emission.
Common light sources(electric light bulb)��Emit photons in all directions, usually over a wide
spectrum of wavelengths. Host light sources are incoherent
LASER��Emit photons in a narrow, well defined beam of light. The light is often nearmonochromatic,
consistency of single narrow wavelength. It is highly coherent and is often
LASER was introduced to practice in 16 May 19601,2. Laser introduce into medicine at early
LASER in Medicine: various types of laser are used in medicine for diagnosis, treatment and
The medical areas that employ laser include: Angioplasty, Dentistry, Dermatology, Lithotripsy,
Mammography, Ophthalmology, Surgery, Urology, Cancer laser (PDT: Photodynamic therapy)3.