8.04
6
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Polar
Polarization Reminder
E
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Polarizing Filters
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Commons license. For more information, see http://ocw.mit.edu/help/faq-fair-use/.
Polarizing Filters, Cartoon
U
V
U
H
Crossed Polarizers
U
0%
Polarizing Filters, Rotated
U
P
U
M
Three Polarizers
U
H
Polarizing Beam Splitter
U
H
V
V
0
H
PBS, Rotated
U
P
M
M
P
Polarization and ColorHardness are Analogous!
Hyper-Intelligent
Monkeys
B
C
Polarization
V
0
W
H
M
H
H
S
P
An Example from Class
Hyper-Intelligent
Monkeys
B
B
H
C
W
Polarization
H
S
C
W
V
M
V
0
H
P
0
H
Three Polarizers, Again
This time with vectors!
Previous field projected onto 45° axis
E field
A=1
V
0
H
H and V projections
E field
A = 1/!2
M
P
V
0
H
A="
each
The Extra Credit Problem?
But wait! The
Amplitude is now
greater than 1!
A="
+
V
0
A=1
+
A = 1/!2
H
+
V
M
P
More power out than in!
0
H
MIT OpenCourseWare
http://ocw.mit.edu
8.04 Quantum Physics I
Spring
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