chapter 8 coherence theory

Question 1

Polarized light

Answer 1

E field of light oscillates in a regular predictable fashion then it is polarized

NOT rhe dipoles per volume in a material (vector P)

Linearly polarized, E oscil in plane
circ - oscil in spiral around while a PW porpogates

Question 2

Circular polarisation

Answer 2

y dimension lags in time behind Ex by quarter cycle (PI/4 QWP)

Question 3

WHat kind of vec is jones

Answer 3

Unit vector if Axhat+B e blah yhat

Question 4

How to find major axis of elliptically polarised light

Answer 4

Use alpha angle fomula (with the arctan) to get alpha

sub into Ea and E_pi/2
determin max and min

Question 5

Wave plates/phase retarders

Answer 5

Birefringent crystals (def)
Som polarisations expecrience n_slow, other n_fast so on component gets a relative phase

Dont loose intensity

Question 6

Birefringent crystals

Answer 6

Index of refraction dep on orientation of E field polarisation
imples slow and fast axis

Question 7

How do you adjust the phase difference in waveplate

Answer 7

The pahse redarnce can be adjusted by chaning the thickness of the wave plate