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

Evaluate the path of the magnetic field, A straight vertical wire passes by...

A straight vertical wire passes by a wooden table top. The wire carries an upward directed current. Evaluate the path of the magnetic field of the wire at a point on the table top

Electric and magnetic phenomena, The line density of charge in a wire is 0....

The line density of charge in a wire is 0.20 Cm-1. If this wire is symmetrically enclosed along its length by a cylindrical surface of radius 1.0 m and length 1.5 m, calculate

Help, Experiencing a constant horizontal 1.10 m/s wind, a hot-air balloon a...

Experiencing a constant horizontal 1.10 m/s wind, a hot-air balloon ascends from the launch site at a constant vertical speed of 2.70 m/s. At a height of 202 m, the balloonist main

Circular polarisation, Circular Polarisation Circular polarisation pro...

Circular Polarisation Circular polarisation produced from a linearly polarised electromagnetic wave through a quarter-wave plate.

State ideal gas equation, All the given four Laws may be written in one rel...

All the given four Laws may be written in one relation,  PV  = nRT =m/n RT   This formula is known as deal gas equation. Where m = mass of the gas M = molecular mass of t

Research paper writing, how to write a paper when it is based on matlab pro...

how to write a paper when it is based on matlab program

Determine the hydraulic gradient and pressure, A piping system is shown bel...

A piping system is shown below. Flow is from A to D and minimum pressure to be maintained is 20 psi. Pipe Length (ft) Diameter (in) Flow r

Electricity, help by post offoce box explan rasistance of a wire

help by post offoce box explan rasistance of a wire

Explain newton''s first law of motion, NEWTON'S FIRST LAW OF MOTION: Th...

NEWTON'S FIRST LAW OF MOTION: This law states that "A body at rest will remain at rest and a body moving with uniform velocity will carry on doing so, until acted on by some un

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