title: Monolithic integration of III-V nanowire with photonic crystal microcavity for vertical light emission.
abstract: A novel photonic structure formed by the monolithic integration of a vertical III-V nanowire on top of a L3 two-dimensional photonic crystal microcavity is proposed to enhance light emission from the nanowire. The impact on the nanowire spontaneous emission rate is evaluated by calculating the spontaneous emission factor β, and the material gain at threshold is used as a figure of merit of this vertical emitting nanolaser. An optimal design is identified for a GaAs nanowire geometry with r = 155 nm and L~1.1 μm, where minimum gain at threshold (gth~13×10³ cm⁻¹) and large spontaneous emission factor (β~0.3) are simultaneously achieved. Modification of the directivity of the L3 photonic crystal cavity via the band-folding principle is employed to further optimize the far-field radiation pattern and to increase the directivity of the device. These results lay the foundation for a new approach toward large-scale integration of vertical emitting nanolasers and may enable applications such as intra-chip optical interconnects.
authors.affiliation: CINTRA CNRS-NTU-Thales, UMI 3288, Research Techno Plaza, 50 Nanyang Drive, 637553 Singapore.
authors.forename: Alexandre
authors.initials: A
authors.lastname: Larrue
authors.forename: Christophe
authors.initials: C
authors.lastname: Wilhelm
authors.forename: Gwenaelle
authors.initials: G
authors.lastname: Vest
authors.forename: Sylvain
authors.initials: S
authors.lastname: Combrié
authors.forename: Alfredo
authors.initials: A
authors.lastname: de Rossi
authors.forename: Cesare
authors.initials: C
authors.lastname: Soci
mesh_terms: D001152:Arsenicals / Q000737:chemistry*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005708:Gallium / Q000737:chemistry*; D007834:Lasers; D008029:Lighting / Q000295:instrumentation*; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure*; D017785:Photons; D020349:Surface Plasmon Resonance / Q000295:instrumentation*; D018511:Systems Integration
chemical_list: D001152:Arsenicals; C043055:gallium arsenide; D005708:Gallium