Phys 532 Assignment 4
Due February 13
1. Stimulated vs. Spontaneous Emission: (a) An atom contains two energy
levels connected by a transition with wavelength 0 = 0.7 m, spontaneous lifetime
tsp = 3 ms, and a Lorentzian lineshape with width = 50 GHz. The
Phys 532 Assignment 3
Due February 6
1. Modes of 699 Cavity: (a) Find the Gaussian beam mode of the the 699 laser
cavity. In particular, locate all the positions in the cavity at which a focus occurs,
and determine the beam waist at each focus. Assume a w
Phys 532 Assignment 2
Due January 30
1. Gaussian Beam Identication. (Saleh and Teich Problem 3.1-2) A Gaussian
beam of wavelength = 10.6 m (emitted by a CO2 laser) has widths W1 = 1.699
mm and W2 = 3.38 mm at two points separated by a distance d = 10 cm.
Phys 532 Assignment 1
Due January 23
1. Ray Matrices. (a) Use Snells Law to derive the ray transfer matrices for a
spherical dielectric surface, Saleh and Teich Eq. (1.4-5).
(b) Using ray matrices, calculate the focal length of a thin lens constructed of
Phys 532 Midterm Exam
Due March 5
Instructions:
This is a take home, unlimited time exam. You may not discuss the problems
with other students, but you are free to use the textbook, your notes, and any other
reference materials you wish. You may use a com
Phys 532 Midterm Exam
Due March 17
Instructions:
This is a take home, unlimited time exam. You may not discuss the problems
with other students, but you are free to use the textbook, your notes, and any other
reference materials you wish. You may use a co
Phys 532 Final Exam
April 28
9:00 Noon
Instructions:
This is an in-class exam that must be completed during the
allotted 3 hour period. You may use your class notes and the textbook for reference.
You may also use a calculator and scratch paper as desired
Phys 532 Assignment 5
1. Rate Equations: Use the rate equations to calculate the population inversion N0 = N2 (g2 /g1 )N1 for
the four-level system shown. The only transition being
driven is the 0 3 pump transition, and you can assume
that the pump rate i
Phys 532 Assignment 12
Due April 30
1. OPO output power: Suppose an optical parametric oscillator is constructed
using a 1-cm long BBO crystal that is pumped by the third harmonic of a Nd:YAG
laser at 355 nm. The crystal angle is set to = 37 , which is th
Phys 532 Assignment 10
Due April 9
1. Classical Model for Nonlinear Response: The nonlinear optical response
of a medium can be understood in terms of a simple classical model. Suppose a
medium contains classical particle-like electrons that move in a 1-d
Phys 532 Assignment 11
Due April 16
1. Pulsed vs. CW Harmonic Generation: Suppose a particular secondharmonic generation arrangment is run with CW input power P () and output power
P (2) such that the conversion eciency is P (2)/P () =
1. Now drive it
ins
Phys 532 Assignment 9
Due April 2
1. Consider an acousto-optic modulator made of TeO2 , which has an index of
refraction n = 2.35 and sound velocity vs = 617 m/s. The modulator is driven with a
sound frequency of 80 MHz and is used to diract light of (vac
Phys 532 Assignment 8
Due March 26
1. Kerr Modulator: Suppose an intensity modulator is constructed by placing
an isotropic Kerr medium between two polarizers, as in Saleh and Teich Fig 18.16. Calculate the output intensity as a function of applied voltag
Phys 532 Assignment 7
Due March 19
Problems 13 are research problems, rather than the usual analytical type. You
should look up the requested information in a book, a catalog, or on-line. Your
response should cite what source you used. If you correctly ci
Phys 532 Assignment 6
Due February 27
1. Optimum Coupling Transmission: We showed that (in the low-loss limit),
the output power of a laser can be expressed as
Pout = w 2 Is T
g0
1
L+T
where w is the beam width in the medium, Is is the saturation intensit