Optical and Dielectric Properties

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Optical and Dielectric Properties
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(No Transcript)
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Maxwells Equations
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Wave Equation
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Wave equation - meaning
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Harmonic waves
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Wave equation for harmonic waves
Phase velocity
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Impedance
Force exerted by EM field on electron
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Power of EM waves
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Poynting Vector
Net Power in
Power Density (irradiance)
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Power of harmonic waves
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Average Power of EM waves
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Average Power of EM waves
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Reflection and Refraction
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eix- erx cos?i etxcos?t
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rS ES,r / ES,i tS ES,t / ES,i
ES,i ES,r ES,t n1?0-1cos?i ES,I- n1?0-1cos?i
ES,r n2?0-1cos?t ES,t
1rStS 1- rS tS?1S /?2S
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rP EP,r / EP,i tP EP,t / EP,i
EP,i cos?i - EP,r cos?i EP,t cos?t n1?0-1EP,i
n1?0-1 EP,r n2?0-1EP,t
? n2/?0 cos?t cos?i EP,i ?1/ cos?i EP,i
(1-rP)/?2P tPn2/?0cos?i (1rP)/?1P
tPn2/?0cos?i
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Invoke Snells law n1sin?i n2sin?t
Brewster angle ?t ?i?/2
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Consider normal incidence
Rr2, T1-R
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n11, n21. 45
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Total Internal Reflection
critical angle
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Total Internal Reflection
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Fields in TIR
Pointing vector in TIR
Energy moves along the boundary
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Fresnel Equations for TIR
?t?
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n11.45, n21.
Total internal reflection (n1/n2) sin?C1