Different types of rays, Physics

Assignment Help:

1. A very narrow laser beam is shone into a sphere of solid glass that has uniform refractive index n>1 and radius ρ . The beam makes an angle α  in air with the normal to the surface of the sphere.

Sketch the path of the beam in the circular cross-section of the sphere defined by the normal and the beam direction and show all reflected and transmitted rays. Using Snell's Law at each reflection, explain why the beam cannot become a whispering gallery ray propagating around the inner surface of the sphere. 

2.  An asymmetric, multimode, step-profile slab waveguide has a core index of 1.5. The cladding index above the core has value 1.49 and the cladding index below the core has value 1.48. Rays propagate in the core in the x-z plane and make an angle θz relative to the z-axis along the centre of the waveguide.

(a) Determine the range of (positive) values of θz in degrees for which only bound rays will propagate along the waveguide.

(b) How many different types of rays can propagate along the waveguide?

Sketch a typical path for each type of ray.

(c) Determine the values of θz in degrees that delineate between the 3 types of ray paths.


Related Discussions:- Different types of rays

Motion WS, a rocket is launched upward from a building that is 29m above th...

a rocket is launched upward from a building that is 29m above the ground. the rocket was launched (upward) at 18m/s, what was the time to reach the ground below the building?

Calculate the irradiance, The greenhouse effect is significant not only on ...

The greenhouse effect is significant not only on Earth but also on Venus and Mars. The following table summarizes the following basic observations:  (A) Using Stefan's equa

Explain concept of ideal gas, The ideal gas approximation: The given assump...

The ideal gas approximation: The given assumptions are suppose while defining an ideal gas: (i) The number of molecules in the gas is very huge. (ii) The volume V having the

What are non-mechanical waves , The waves which do not needs medium for the...

The waves which do not needs medium for their propagation are known as non- mechanical or electromagnetic waves. Examples : Light, heat (Infrared), radio waves, gamma- rays, X-r

What i the name given to that electromagnetic spectrum, What i the name giv...

What i the name given to that kind of electromagnetic spectrum which is used for taking photographs of earth under foggy conditions from great heights?

How fast are the electrons moving - magnetic field, Electrons travelling at...

Electrons travelling at right angles to a magnetic field experience a force of  8.3 x 10 -13 N when they are in a magnetic field of 6.2 x 10 -1 T. How fast are the electrons

Solid stae physics, obtain an expression for dipolar polarisability of a di...

obtain an expression for dipolar polarisability of a dielectric at moderate temperature

# , what is acqustic phenomenon?

what is acqustic phenomenon?

What are semiconductors, What are semiconductors? Give an example for n-typ...

What are semiconductors? Give an example for n-type semiconductors. Semiconductors are materials having electrical conductivity among that of insulators and conductors. This i

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