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(a) The specially designed prism, (b) three-beam interference configuration, and (c) schematic of the optical setup.
(a) Simulated intensity distribution of the three-beam interference pattern. (b) AFM image showing the surface morphology of the 2D hexagonal H-PDLC PCs. Scalar bar: 500 nm. (c) The cross-section SEM image of H-PDLC sample. Scalar bar: .
Photonic band structure of the 2D hexagonal H-PDLC PC for the TE polarization. The inset represents the irreducible Brillouin zone. Arrows show the located frequencies where the lasing action occurs.
Lasing spectra measured along (a) and (c) directions. Relationships of peak intensity vs pumping energy along (b) and (d) directions.
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