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lecture5 - Fundamentals Light EM wave Obeys Maxwell's...

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Fundamentals Light–EM wave UV, Visible range (380 750 nm), NIR Obeys Maxwell’s equations Electric / Magnetic components Properties Intensity/Wavelength/Polarization/Phase Optics–study of light properties, its interaction with matter and devices to influence/detect it Geometrical optics, physical (wave) optics, light sources, nanophotonics…
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Fundamentals
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Fundamentals
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Fundamentals Maxwell’s equations EE l e c t r i c field BM a g n e t i c field DE l e c t r i c displacement HM a g n e t i c field strength ε permittivity μ permeability ρ charge density ie l e c t r i c current Jc u r r e n t density cs p e e d of light P Polarization M Magnetization
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Maxwell’s Equations f  D 0  B   B E t D H J t Divergence equations Curl equations D = Electric flux density E = Electric field vector = charge density B = Magnetic flux density J = current density H = Magnetic field vector Maxwell’s Equations
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  0  DE P E E Electric polarization vector…… Material dependent!! Total electric flux density = Flux from external E field + flux due to material polarization = Material dependent dielectric constant 0 = Dielectric constant of vacuum = 8.85 10 12 C 2 N 1 m 2 [F/m]   00  B HM H Magnetic flux density Magnetic field vector Magnetic polarization vector μ 0 = permeability of free space = 4 π x10 7 H/m Note: For now, we will focus on materials for which 0 M 0 B H Constitutive relations relate flux density to polarization of a medium Electric Magnetic When P
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This note was uploaded on 02/12/2012 for the course ECE 414 taught by Professor Alenxendra during the Spring '11 term at Purdue.

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lecture5 - Fundamentals Light EM wave Obeys Maxwell's...

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