Physics Investigatory Project Class 12-B1

LASERS PHYSICS INVESTIGATORY PROJECT , Mohamed Saheen Marakkar Class ______

This is to certify that Miss/Master has satisfactorily completed the Physics Investigatory Project of Grade 12 during the academic session ______

As prescribed by the Central Board of Secondary Education , New ______

With the completion of my project, I would like to take this opportunity to wholeheartedly thank every individual who has supported me in conducting this ______

I would like to express my deep gratitude to Mr. Sahil Mansoori, for his patience, motivation, and ______

I am highly indebted to the school faculty, especially our Senior Leadership Team, for providing me with the faculties required during the making of this ______

A laser is a device that emits light through a process of optical amplification based on the stimulated emission of ______ radiation.

The word laser is an acronym for Light Amplification by Stimulated Emission of ______.

The basic components of a laser are: ▪ A gain medium: This is the material that emits ______. It can be a gas, a solid, or a liquid.

An energy source: This is used to excite the atoms or molecules in the gain ______.

When an atom or molecule in the gain medium is excited, it releases a photon of ______.

The photons that are emitted by stimulated emission are all in phase, which means that they have the same ______ and direction.

In a laser beam, the light waves are all moving in the same direction and at the same ______.

The gain medium can be a solid, like glass, or a ______.

The mirror on one side of the laser reflects the light back toward the ______.

The space between the mirrors, called the cavity, is designed so that the light is reflected back and forth, ______ it.