Waveplates are made from materials which exhibit birefringence. The velocities of the extraordinary and ordinary rays go though the birefringent materials vary inversely with their refractive indices. The difference in velocities gives rise to a phase difference when the two beams recombine.
波片
Waveplates are made from materials which exhibit birefringence. The velocities of the extraordinary and ordinary rays go though the birefringent materials vary inversely with their refractive indices.
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