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 absorbing this light. The atom in the excited state come …
Laser physics
What is Temporal Coherence
Coherence is the term used to describe the phase correlation phenomenon between two waves with respect to time or space. Temporal Coherence Temporal coherence is the correlation between the electric …
3 main Components of Laser
The term Laser is an acronym for Light Amplification by Stimulated Emission of Radiation. There are main 3 components of Laser device: The active Medium or laser gain medium. A …
Properties of Photon
Before study the properties of photon we must have to know some basic introduction of photon. In 1905, Einstein explained photoelectric effect by considering light consisted of quantum of energy …
5 best Applications of co2 Laser I Co2 laser in the medical field.
Co2 Laser beam is an intense, monochromatic, concentrated, and coherent beam of light. Co2 laser has a wavelength of output is 0.6μm and 10.6μm and the power output of Co2 …
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What is holography? |How does Holography Work | 5 Application of Holography?
In an Ordinary photograph of an object taken by a camera three-dimensional scenes is recorded as a two-dimensional scene. Since the emulsion on the photographic plate is sensitive to intensity …
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What is Dye Laser I Construction and Working I 7 Advantage, Disadvantages, Applications?
In dye laser, organic dyes are used as an active medium. Organic dyes are colored substances having the ability to impart colors to liquids, gases, and solid. Examples of organic …
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Carbon Dioxide Laser: Definition, Principle, Construction and Working, 5 Advantages and Disadvantages.
In a molecular gas laser, laser action is achieved by transitions between vibrational and rotational levels of molecules. Its construction is simple and the output of this laser is continuous. …
What is the Excimer Laser? Construction and Working. 3 Applications.
Excimer Laser An excimer laser is the type of molecular laser – Isolated atoms and ions in ionic laser have discrete energy levels. However, molecules have energy bands. These bands …
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What is a Nitrogen Laser – Construction, Working, and 5 advantages, 7 Applications.
In nitrogen laser, active or gain or lasing medium is nitrogen molecules in the gaseous phase. It is a three-level laser. Population inversion in nitrogen laser is achieved by an …
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