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Unformatted text preview: Reflection and Refraction at a Boundary - 8 Light of freespace wavelength 1 , 550 nm is widely used in fiber optic communica- tions. This light is inside a semiconductor material Ga . 7 Al . 3 As and is incident upon a planar interface with GaAs . At 1 , 550 nm , the refractive index of Ga . 7 Al . 3 As is 3.2998 and that of GaAs is 3.4210. Both TE and TM polarizations are present in the incident light wave. For the above Ga . 7 Al . 3 As / GaAs interface, calculate, showing all work, the Brewster angle (if it exists) and the critical angle (if it exists). Express angles (if they exist) in degrees accurately to within 0.0001 . If an angle does not exist, write does not exist. Put your final answers in the spaces provided. The incident light has an angle of incidence is 80 as measured counter-clockwise from the normal. For this case, for the reflected and transmitted propagating waves, cal- culate, showing all work, the quantities on the attached sheet. Express angles in degrees accurately to within 0.0001 . Express fractions accurately to within 0.00001. Write your final answers in the spaces provided. Brewster angle (if it exists) = Critical angle (if it exists) = TE Polarized Transmitted Wave Angle of transmitted wavevector (with respect to normal to boundary) = Magnitude of the fraction of amplitude transmitted = Phase shift upon transmission = Fraction of power transmitted = TE Polarized Reflected Wave Angle of reflected wavevector (with respect to normal to boundary) =...
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This note was uploaded on 04/29/2008 for the course ECE 4500 taught by Professor Gaylord during the Spring '08 term at Georgia Institute of Technology.
- Spring '08