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- W2003455770 abstract "Characteristics of GaN-based photonic crystal surface-emitting lasers (PCSELs) were investigated and analyzed. We demonstrated two different lattice constant of the GaN-based PCSEL. One with lattice constant of 290nm emits a blue wavelength at 401.8 nm with a linewidth of 1.6 Angstrom and shows a threshold energy density about 2.7 mJ/cm<sup>2</sup> under the optical pumping at room temperature. The other with lattice constant of 234nm observed a wavelength at 423.8nm with a linewidth of 1.1 Angstrom and energy density about 3.5 mJ/cm2. The laser emission covers whole circularly 2D PC patterns (50 µm in diameter) with a small divergence angle. The lasing wavelength emitted from 2D PC lasers with different lattice constants occurs at the calculated band-edges provided by the PC patterns. The characteristics of large area, small divergence angle, and single mode emission from the GaN-based 2D surface-emitting PC lasers should be promising in high power blue-violet emitter applications. The lasing wavelength emitted from PCSELs with different lattice constants occurs at the calculated band-edges showing different polarization angles due to the light diffracted in specific directions, corresponding exactly to Γ, K, and M directions in the K-space. Furthermore, the PCSEL also shows a spontaneous emission coupling efficiency β of about 5x<sup>10-3</sup> and a characteristic temperature of 148K." @default.
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- W2003455770 date "2008-11-13" @default.
- W2003455770 modified "2023-10-18" @default.
- W2003455770 title "Characteristics of GaN-based photonic crystal surface-emitting lasers" @default.
- W2003455770 doi "https://doi.org/10.1117/12.804316" @default.
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