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Single-Mode Emission in InP Microdisks on Si Using Au Antenna.

ABSTRACT: An 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.

SUBMITTER: Tiwari P

PROVIDER: S-EPMC9026291 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature

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Single-Mode Emission in InP Microdisks on Si Using Au Antenna.

Tiwari Preksha P Fischer Anna A Scherrer Markus M Caimi Daniele D Schmid Heinz H Moselund Kirsten E KE

ACS photonics 20220317 4

An 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 ...[more]

PMID: 35480488

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