Acceptance Angle of Optical Fiber for Engineering Physics: The maximum incidence angle of a light ray which can be used for injecting light into a fiber core or waveguide is know…
Category: B.Tech./1Sem/Physics
Propagation Mechanism of Optical Fiber for Engineering Physics
Light propagation of Optical Fiber: Visible light extends from 380 nm (violet) to 780 nm (red). For smaller wavelengths ultra-violet radiation (UV) occurs. Longer wavelengths correspond to the infrared region…
Fundamental Ideas about Optical Fiber For Engineering Physics
Fundamental Ideas about Optical Fiber For Engineering Physics: An optical fiber is a cylindrical dielectric wave guide (nonconducting wave guide) that transmits light along its axis, by the process of…
Fiber Optics for Engineering Physics
Fiber Optics for Engineering Physics: An optical fiber or optical fiber is a flexible, transparent fiber made by drawing glass (silica) or plastic to a diameter slightly thicker than that of…
Laser Applications For Engineering Physics First Year
Laser Applications For Engineering Physics First Year: Many scientific, military, medical and commercial laser applications have been developed since the invention of the laser in 1958. The coherency, high monochromaticity,…
Introduction to He-Ne Lasers
He-Ne stands for HeliumNeon. The HeNe laser active medium consists of two gases which do not interact form a molecule. Therefore HeNe laser is one type of atomic gas lasers.…
Construction and Working of Ruby Laser
Ruby Laser Ruby belongs to the family of gems consisting of Al O with various types of impurities. For example pink Ruby contains 0.05% Cr atoms. Construction of Ruby Laser:…
Concept of 3 And 4 Level Laser Notes for Engineering Physics 1st Year
Optical amplification in the gain medium of a laser or laser amplifier arises from stimulated emission, where the input light induces transitions of laser-active ions from some excited state to…
Population Inversion for BTech 1 Year Physics Students
Introduction of Population Inversion for BTech 1 Year Physics Students: We use Population Inversion to Achieve Amplification Metastable states, where the lifetime of the atoms are of the order of…
Stimulated Emission of Radiation
The incident photon interacts with the atom and may cause the atom to come to lower state along with an emission of a photon. This process is called stimulated emission.…