1. ECEG287 Optical Detection Course Notes Part 18: Odds and Ends
Profs. Charles A. DiMarzio
and
Stephen W. McKnight
Northeastern University, Spring 2004
April 2004
Chuck DiMarzio, Northeastern University

2. Chuck DiMarzio, Northeastern University
Image Intensifier
Phosphor
Detector
Photocathode
Micro-Channel Plate
Note absence of h
April 2004
Chuck DiMarzio, Northeastern University

3. Image Intensifier/Demodulator
Phosphor
Detector
Photocathode
Micro-Channel Plate
April 2004
Chuck DiMarzio, Northeastern University

4. Chuck DiMarzio, Northeastern University
Application: DOT
Demod
Laser P P t t
April 2004
Chuck DiMarzio, Northeastern University

5. Chuck DiMarzio, Northeastern University
Demodulation
April 2004
Chuck DiMarzio, Northeastern University

6. Chuck DiMarzio, Northeastern University
Correlator
Barrier Filter
NLO Crystal
Side View
April 2004
Chuck DiMarzio, Northeastern University

7. Chuck DiMarzio, Northeastern University
Maxwell’s Equations
Faraday’s Equation
Ampere’s Equation
Gauss’s Equations
Constitutive Parameters
April 2004
Chuck DiMarzio, Northeastern University

8. Chuck DiMarzio, Northeastern University
Maxwell’s Equations
Source-Free Region
No r or J
Isotropic Medium
E Parallel to D
Harmonic Functions
No Nonlinear Effects
April 2004
Chuck DiMarzio, Northeastern University

9. Getting to the Wave EquationD E
Almost everything interesting is here H B
April 2004
Chuck DiMarzio, Northeastern University

10. Chuck DiMarzio, Northeastern University
Vector Wave Equation D E
Linear Medium 4 3 1 2 B H
April 2004
Chuck DiMarzio, Northeastern University

11. Chuck DiMarzio, Northeastern University
Scalar Wave Equation D E 4
Linear, Isotropic Medium 3 1 2 H B
(Two States of Polarization)
April 2004
Chuck DiMarzio, Northeastern University

12. Second-Harmonic GenerationB H B
More on this later in the course.
April 2004
Chuck DiMarzio, Northeastern University

13. Chuck DiMarzio, Northeastern University
Classical NLO Model
One-D
A Tensor model is more appropriate for most non-linear optics work.
April 2004
Chuck DiMarzio, Northeastern University

14. Chuck DiMarzio, Northeastern University
Energy Level Diagrams
Detection
SHG
First-order perturbation is linear in the number of photons.
Second-order perturbation is quadratic in the number of photons.
April 2004
Chuck DiMarzio, Northeastern University

15. Chuck DiMarzio, Northeastern University
Powers in Correlator dt
SHG Power is proportional to product of these two.
dt is proportional to q, and is a “slow” function of time.
SHG Energy is the time integral of SHG Power. dt
time
April 2004
Chuck DiMarzio, Northeastern University