Laser Diodes
Revised: 3/27/12 15:24
2012, Henry Zmuda
Set 6a Laser Diodes
1
Semiconductor Lasers
The simplest laser of all.
2012, Henry Zmuda
Set 6a Laser Diodes
2
Semiconductor Lasers
1. Homojunction Lasers
2. Heterojunction Lasers
3. Quantum Well Lase
Semiconductor Lasers
Revised: 3/21/12 12:56
2012, Henry Zmuda
Set 6 Semiconductor Laser Fundamentals
1
Semiconductor Lasers
The simplest laser of all.
2012, Henry Zmuda
Set 6 Semiconductor Laser Fundamentals
2
Semiconductor Lasers
The simplest laser of
Laser Characteristics
Revised: 3/21/12 13:04
2012, Henry Zmuda
Set 4 Laser Characteristics
1
Laser Characteristics
Still to be answered:
1. What is the laser amplitude?
2. What if there are transient effects (time dynamics)?
3. What exactly is the pumpin
Laser Oscillation & Amplification
Revised: 2/2/12 17:02
2011, Henry Zmuda
Set 3 Laser Oscillation
1
Threshold Conditions
From Slide 50 of Note set 2, our central equation of laser
theory, we recall:
"
"2
g2 %
! o ( f ) = g ( f ) 2 A21 $ N 2 ! N1 '
8n #
g
Atomic Radiation
Revised: 2/9/12 10:44
2011, Henry Zmuda
Set 2 Atomic Radiation
1
Atomic Radiation
A laser is a quantum device.
Energy levels in an atomic system are discrete, be they
molecular, solid, or semiconductor.
( 2)
(1)
Energy
Level
Diagram
201
Gaussian Beam Optics,
Ray Tracing, and Cavities
Revised: 1/25/12 1:57 PM
2011, Henry Zmuda
Set 1 Gaussian Beams and Optical Cavities
1
I. Gaussian Beams
(Text Chapter 3)
2011, Henry Zmuda
Set 1 Gaussian Beams and Optical Cavities
2
Gaussian Beams
Real o