Lect19NonNormalAnimate - = r E r E r E r D r D r D z y x o...

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1 Rana and Swartz 06/5/25 Electromagnetic Fields and Waves – Fall 2009 Lecture 19: Half-Wave Plates: An Example ( 29 ( 29 ( 29 ( 29 ( 29 ( 29 = r E r E r E r D r D r D z y x o z y x 9 0 0 0 9 0 0 0 4 ε c k e o e 2 ϖ μ = = c k o o o 3 = = E y x z =0 z = L y -axis and z-axis are the slow axes x -axis is the fast axis • As the wave propagates in the plate, the y-component of the wave lags behind the faster x-component of the wave in space. E Ex Ey • When the lag in space is one-half of a wavelength (or an odd-multiple of it) the total E-field is polarized in the orthogonal direction (hence the name “half-wave” plate ).
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2 Rana and Swartz 06/5/25 Electromagnetic Fields and Waves – Fall 2009 Lecture 19: Quarter-Wave Plates: An Example ( 29 ( 29 ( 29 ( 29 ( 29 ( 29
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Unformatted text preview: = r E r E r E r D r D r D z y x o z y x 9 9 4 c k e o e 2 = = c k o o o 3 = = E y x z =0 z = L y-axis and z-axis are the slow axes x-axis is the fast axis As the wave propagates in the plate, the y-component of the wave lags behind the faster x-component of the wave in space. E Ex Ey When the lag in space is 1/4 of a wavelength (or an odd-multiple of it) the total E-field becomes circularly polarized (hence the name 1/4-wave plate )....
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Lect19NonNormalAnimate - = r E r E r E r D r D r D z y x o...

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