Assignment 7, solutions:

Problem 2:

Law of refraction:  sinq_B' = n_Tesinq_B,  n_Te = 2.26

Deflection angle:  f = 2q_B'

sinq_B  = k_s/2k_i = l_i/(2n_Tel_s) = l_if_s/(2n_Tev_s) = 2.7 10^-3

sinq_B' = 6.12 10^-3, f = 0.7^o

Problem 3:

The rise time t_r for an acousto-optic modulator is given by  t_r = d/v_s, where d  is the diameter of the laser beam and v_s is the speed of sound in the material.

t_r = [d(in mm)/(6.57*10^-3)]ns