a) A particular polymer is found to have birefringence of magnitude |An| = 5×10-³ for light with wavelength 632 nm. Find

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A A Particular Polymer Is Found To Have Birefringence Of Magnitude An 5 10 For Light With Wavelength 632 Nm Find 1 (104.38 KiB) Viewed 40 times

a) A particular polymer is found to have birefringence of magnitude |An| = 5×10-³ for light with wavelength 632 nm. Find the minimum thickness of a quarter waveplate (QWP) made from this material. [3] b) The Jones matrix of a QWP with its fast axis aligned with the r' axis is given by J' = = (69) when expressed in the a'y' frame. This frame is rotated anti-clockwise from ry by angle , as illustrated below left. Find the corresponding Jones matrices in the ry representation for the cases: (i) 0 = 45°, (ii) 0 = -45°. [6] [Hint: You will find it useful to recall that the matrix R(0) converts a vector whose components are expressed in the a'y' frame to the ry representation.] slow QWP R(0) = cos sin e sin cos (050) slow X QWP p fast fast -45⁰