Describe how the laser transitions are arisen, Physics

Assignment Help:

Describe how the laser transitions are arisen.

The given energy level diagram could describe how the laser transitions arise.

1929_Laser transitions arisen.png

Collisions in between the He atoms and Ne atoms because of excitations. The 2s states (as E3 and E5) of He are meta stable, therefore collisions of He atoms into this high state cause excitations into the Ne atoms. At last, the stimulated emission takes place in between E5 and E2leading to the emission of wavelength as:

ΔE = 20.66 - 18.70 = 1.96eV

that is  Λ = hc/ΔE

= (6.63 × 10-34 × 3.0 × 108)/(1.6 × 10-19 v 1.96)

= 632.8nm


Related Discussions:- Describe how the laser transitions are arisen

Explain working principle of d.c motor, Working Principle of D.C Motor ...

Working Principle of D.C Motor A) An electric motor is a machine which changes electrical energy into mechanical energy. B) When a current carrying conductor is placed in a

Explain methods of demagnetization, Methods of Demagnetization: 1. A ma...

Methods of Demagnetization: 1. A magnet loss it's magnetic properly when it is heated strongly. 2. Practically a magnet can be demagnetized by hammering when it is placed in

How do you calculate tensile strength, How do you calculate tensile strengt...

How do you calculate tensile strength? Tensile strength isn't really measured; it's calculated. It is explained as the point at which a sample of material fails when subjected

What is utilisation summary of every processor, Q. What is Utilisation Summ...

Q. What is Utilisation Summary of every processor? Utilisation Summary points to status of every processor it implies that how much time (in form of percentage) has been spent

Special features and applications of carbon dioxide laser, What are the Spe...

What are the Special features and Applications of carbon dioxide laser? Special features and Applications of carbon dioxide laser: The efficiency of this Laser is extremely

English, distinguish feature of litearay writing

distinguish feature of litearay writing

Fermi energy and fermi dirac distribution law, Q. Define Fermi energy. Writ...

Q. Define Fermi energy. Write down the expression for Fermi Dirac distribution law. Deduce an expression for Fermi energy of a system of free particles. Sol. The Fermi Energy

Laws of motion: find the time, A thin rod of length 1 m is fixed in a verti...

A thin rod of length 1 m is fixed in a vertical position inside a train, which is moving horizontally with constant acceleration 4 m/s2. A bead can slide on the rod, and friction c

Friction, Laws of limiting friction

Laws of limiting friction

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