ABSTRACT
A laser beam is generated by a device, consists of photons which are of the same wavelength (monochromatic), coherent (all components of the waveform are in phase) and collimated (very little beam divergence). This beam is further passed through a series of focusing lenses to reduce its diameter and increase its intensity and energy to make it suitable for clinical applications. Apart from making more power than a single laser diode, a stack opens the possibility of generating multiple different wavelengths at the same time because each laser in the stack can make a different one. The lasers used in maxillofacial surgery are often delivered to the tissues via optical cables or through mirrors in an articulated arm, dependent on the wavelength and power of the laser beam. The effect of laser on the tissue is principally dependant on its wavelength, power and delivery sequence in addition to the particular characteristics of the tissues.
