L. Graphic of the woodpile photonic crystal structure that has a similar structure to a diamond crystal but magnified 1000 times. R. Reflectivity vs wave number for the [thin] crystals with L=d002 (red), L=2d002 (black), L=3d002 (green), and L=4d002 (blue). The range near 9200cm−1 is excluded, as it is disturbed by the pump laser of the supercontinuum white light source. Images courtesy: University of Twente / Physical Review B journal, May 2020. |
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