Tiwari, PrekshaFischer, AnnaScherrer, MarkusCaimi, DanieleSchmid, HeinzMoselund, Kirsten E.2022-06-202022-06-202022-06-202022-04-2010.1021/acsphotonics.1c01677https://infoscience.epfl.ch/handle/20.500.14299/188646WOS:000795895600016An important building block for on-chip photonic applications is a scaled emitter. Whispering gallery mode cavities based on III-Vs on Si allow for small device footprints and lasing with low thresholds. However, multimodal emission and wavelength stability over a wider range of temperature can be challenging. Here, we explore the use of Au nanorod antennae on InP whispering gallery mode lasers on Si for single-mode emission. We show that by proper choice of the antenna size and positioning, we can suppress the side modes of a cavity and achieve single-mode emission over a wide excitation range. We establish emission trends by varying the size of the antenna and show that the far-field radiation pattern differs significantly for devices with and without antenna. Furthermore, the antenna-induced single-mode emission is dominant from room temperature (300 K) down to 200 K, whereas the cavity without an antenna is multimodal and its dominant emission wavelength is highly temperature-dependent.Nanoscience & NanotechnologyMaterials Science, MultidisciplinaryOpticsPhysics, AppliedPhysics, Condensed MatterScience & Technology - Other TopicsMaterials SciencePhysicslasernanoantennawhispering gallery modecavityphotonicsplasmonicssiliconlasersintegrationwavelengthnanowiretext::journal::journal article::research article