What is LASER?

The name laser is derived from the initials of the words "Light Amplification by Stimulated Emission of Radiation." A laser device is an instrument that converts electrical energy into light energy.

How does a laser work?

When stimulated, electrons move from their normal orbit to a higher energy orbit. Shortly after, they return to their original orbit, emitting light particles (photons) in the form of energy. As billions of atoms' electrons begin to emit light energy, this light is focused into a beam using mirrors and transferred to a thin optical fiber. The energy output from the end of the fiber is high, creating the laser beam. Thus, a laser beam can be described as light with extremely high energy.

Why are lasers given different names?

The name of the laser is given based on the material whose atoms' electrons are used for light emission. For example:

If carbon dioxide is used, it is called Carbon Dioxide Laser (CO2 Laser).
If holmium is used, it is called Holmium Laser.
If thulium is used, it is called Thulium Laser, and so on.

In each case, the name of the laser reflects the specific element or compound that provides the active medium for the laser's operation.

How is laser used in urology?

The energy emitted by a laser can be used for various purposes in urology and other medical fields. It can be used to cut metals, as well as to cut tissues, coagulate bleeding blood vessels, and break down stones.