Capasso, FedericoYu, NanfangKats, Mikhail APflügl, ChristianGeiser, MarkusWang, Qi JieBelkin, Mikhail A.Fischer, MilanWittmann, AndreasFaist, JérômeEdamura, TadatakaFuruta, ShinichiYamanishi, MasamichiKan, Hirofumi2011-11-212009Yu, Nanfang, Mikhail A. Kats, Christian Pflügl, Markus Geiser, Qi Jie Wang, Mikhail A. Belkin, Federico Capasso, et al. 2009. Multi-beam multi-wavelength semiconductor lasers. In Lasers, Optics, and Optoelectronics. Special Issue. Applied Physics Letters 95(16): 161108.0003-6951http://nrs.harvard.edu/urn-3:HUL.InstRepos:5349452Multibeam emission and spatial wavelength demultiplexing in semiconductor lasers by patterning their facets with plasmonic structures is reported. Specifically, a single-wavelength laser was made to emit beams in two directions by defining on its facet two metallic gratings with different periods. The output of a dual-color laser was spatially separated according to wavelength by using a single metallic grating. The designs can be integrated with a broad range of active or passive optical components for applications such as interferometry and demultiplexing.en-USdemultiplexing equipmentdiffraction gratingsintegrated opticslaser beamsoptical communication equipmentoptical design techniquesplasmonicssemiconductor lasersJournal Article2011-11-2110.1063/1.3253713