Scientific principle behind a laser, Physics

Assignment Help:

Scientific principle behind a laser:

The basic scientific principle behind a laser was first put forward by Dr. Charles H.

Towns in 1954 which later led to the development of the laser first developed laser introduced in the year of 1960.

Laser is simply a source of light, but the light has extra - ordinary properties. Laser light is distinguished from an ordinary light source by its

(1) Coherence

(2) Directionality

(3) Monochromaticity and

(4) High intensity.

Lack of coherence makes ordinary light an optical noise. The process of achieving 'population inversion' is called PUMPING. Laser is an extra - ordinary light emitted under stimulated and amplified conditions so that the beam is characterized by high intensity, specific directionality, high monochromaticity and high degree of coherence.

 


Related Discussions:- Scientific principle behind a laser

Explain synchronous condensers, Synchronous Condensers: A synchronous moto...

Synchronous Condensers: A synchronous motor takes a leading current when over-excited and thus behaves as a capacitor. An over-excited synchronous motor running on no load is call

Ammeter, why we can''t reduce the range of AN AMMETER ?

why we can''t reduce the range of AN AMMETER ?

Heat transfer, indicate the process of heat exchange that does not depend o...

indicate the process of heat exchange that does not depend on temperature difference between human skin and enviroment a: convection b: evaporation c: radiation d: conduction

Explain contact forces, Contact forces: types of forces that result when t...

Contact forces: types of forces that result when the two interacting objects are apparent to be physically linking each other. Ex: frictional forces, tensional forces, normal f

Explain limitations of dimensional analysis, (i)  The size examines cannot ...

(i)  The size examines cannot be operated to derive relations other than product of power functions, for example, s = ut + 1/2 at 2 or y = y 0 cosωt and so on, cannot be derived

Corkscrew rule, Corkscrew Rule: Knowing the direction of the current, i...

Corkscrew Rule: Knowing the direction of the current, it is possible to determine the direction of the magnetic field using Maxwell's Corkscrew rule, usually abbreviated to the

Wedge consraint, what is wedge constraint? explain with example.

what is wedge constraint? explain with example.

Explain the half life - Nuclear Physics, Explain the Half-Life The deca...

Explain the Half-Life The decay of a nucleus is a random event.  It is not possible to predict which nucleus will decay and when.  Even though over a period of time, the decay

Atom, what is an atom

what is an atom

Determine tension in pulley problems, Three equal weights A, B, C of mass 2...

Three equal weights A, B, C of mass 2 kg each are hanging on a string passing over a fixed frictionless pulley as shown. Tension in the string connecting weights B and C is approxi

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd