Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

I NEED ONLY PARTS G,H,I,J,K,L,M PLEASE Problem 86. (20 pts) Consider a thin transparent film of index of refraction ng=1.20 and thickness d=100 nm. This

I NEED ONLY PARTS G,H,I,J,K,L,M PLEASE

image text in transcribed

Problem 86. (20 pts) Consider a thin transparent film of index of refraction ng=1.20 and thickness d=100 nm. This film coats a transparent material of index of refraction nm = 1.44. Consider light of wavelength 480 nm in air incident normally on the thin film from air of index na = 1.00. Recall that the amplitude reflection coefficient for normal incidence from medium 1 to medium 2 is r=ni -n2. Take the electric field incident on the film to be E = (2000 V/m) cos(wt) ni+n2 A) Show that the chosen indices of refraction satisfy the relation ng= anm. B) Find the wavelength of light in the film. C) Show that the chosen film thickness satisfies d= \f/4, where if is the wavelength of the light in the film. D) Find the reflection coefficient for the air-to-film interface. Call this r1. E) Find the reflection coefficient for the film-to-air interface. Call this r. F) Find the reflection coefficient for the film-to-material interface. Call this r2. G) It turns out that energy conservation requires that the transmission coefficient 1 through the air to film interface must be such that +2=1-r. Find 72. H) The electric field reflected directly at the air to film interface is Eo=r E. Find Eo. I) The electric field heading to the left from the air film interface that has entered the film, reflected from the film and then exited the film back into the air is E1=Tr2T (2000 V/m) cos(wt+kf (2d)). Find E1. (Recall that cos(wt+T)= -cos(wt) and kf=2 TT / If.) J) The electric field that enters the film and makes two round trips through the film before exiting to the left is E2= Tr2r1 r27 (2000 V/m) cos(wt+kf (4d)). Find E2. K) Note that the electric field that enters the film and makes N round trips through the film before exiting to the left is En=tr2 (r r2)N-17 (2000 V/m) cos(wt+kf (2 Nd)). Find and simplify En. 3 L Find Eo + EN N=1 M) Show that the total reflected field is exactly zero. That is show that Er=Eo+ En=0. Hint: N=1 N 1 C

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

GMP Audit Trainer Good Manufacturing Practices Made Easy

Authors: Mr Brendan Cooper

1st Edition

1548711934, 978-1548711931

More Books

Students also viewed these Accounting questions

Question

How to Estimate a Population Mean or Proportion

Answered: 1 week ago

Question

6. Explain the power of labels.

Answered: 1 week ago

Question

5. Give examples of variations in contextual rules.

Answered: 1 week ago

Question

f. What stereotypes were reinforced in the commercials?

Answered: 1 week ago