Modern Optics Lecture - San Jose State University · 2015. 6. 19. · Physics 158 Peter Beyersdorf...
Transcript of Modern Optics Lecture - San Jose State University · 2015. 6. 19. · Physics 158 Peter Beyersdorf...
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Polarization ReviewThursday, 11/16/2006
Physics 158Peter Beyersdorf
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Describe these polarization states
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Jones VectorsExpressing polarization in terms of two orthogonal states with complex amplitude (i.e. amplitude and phase) of each component expressed in vector form
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vertical.[
01
]
.
horizontal.[
10
]
.
linear at +45°.
1√2
[11
]
.
linear at θ.[
cos θsin θ
]
.
right circular.
1√2
[i1
]
.
left circular.
1√2
[1i
]
.
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Jones Calculus
Find the Jones matrix for a thickness of optically active corn syrup that rotates the polarization by +90°
Find the Jones matrix for reflection from an air-glass interface, if the light is incident at oriented at an angle θ relative to the normal
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Corn Syrup Demonstration
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Circular Polarization Basis
Describe the following in terms of L and R states (left and right handed circular polarization respectively)
cos(kz-ωt) + cos(kz-wt)
cos(kz-ωt) + sin(kz-wt)
cos(kz-ωt+π/3) + cos(kz-wt)
cos(kz-ωt) - 2 cos(kz-wt)
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x y
x
x
x
y
y
y
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Retarders
Use Jones calculus to find the intensity of light transmitting through a pair of crossed polarizers with a retarder between them. The retarder has a retardance of 2πΛ/λ and has its fast axis oriented at an angle θ with respect to the transmission axis of the first polarizer.
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Stress Induced Birefringence
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Stress Induced Birefringence
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Optical Activity and Birefringence
Describe how you could differentiate between an optically active material between two crossed polarizers that rotates the polarization by 10° and a half-waveplate between crossed polarizers that rotates the polarization by 10°
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Polarizers
Draw the polariation state for unpolarized light that propagates through a linear polarizer followed by a half wave plate oriented with its fast axis at 45° with respect tot he polarizer transmission angle. Repeat for unpolarized light going in the opposite direction.
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Polarizers
Draw the polariation state for unpolarized light that propagates through a linear polarizer followed by a quarter wave plate oriented with its fast axis at 45° with respect to the polarizer transmission angle. Repeat for unpolarized light going in the opposite direction.
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