
Spontaneous Emission and Stimulated Emission
When light of suitable frequency incident on the substance, the atom of the substance go to the excited states by…

When light of suitable frequency incident on the substance, the atom of the substance go to the excited states by…
Coherence is the term used to describe the phase correlation phenomenon between two waves with respect to time or space.…
The term Laser is an acronym for Light Amplification by Stimulated Emission of Radiation. There are main 3 components of…
Before study the properties of photon we must have to know some basic introduction of photon. In 1905, Einstein explained…

Co2 Laser beam is an intense, monochromatic, concentrated, and coherent beam of light. Co2 laser has a wavelength of output…

In an Ordinary photograph of an object taken by a camera three-dimensional scenes is recorded as a two-dimensional scene. Since…

In dye laser, organic dyes are used as an active medium. Organic dyes are colored substances having the ability to…

In a molecular gas laser, laser action is achieved by transitions between vibrational and rotational levels of molecules. Its construction…

Excimer Laser An excimer laser is the type of molecular laser - Isolated atoms and ions in ionic laser have…

In nitrogen laser, active or gain or lasing medium is nitrogen molecules in the gaseous phase. It is a three-level…