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    Double-lattice photonic-crystal resonators enabling high-brightness semiconductor lasers with symmetric narrow-divergence beams

    Achieving high brightness (where brightness is defined as optical power per unit area per unit solid angle) in semiconductor lasers is important for various applications, including direct-laser processing and ...

    Masahiro Yoshida, Menaka De Zoysa, Kenji Ishizaki, Yoshinori Tanaka in Nature Materials (2019)