Abstract

Tunable on-chip nanolaser sources are indispensable for advances in optical data transmission and computing. One way to tune emission wavelength is through use of coupling between two nanolasers, and to exploit their non-Hermitian properties, such as single mode emission and exceptional points as a function of non-uniform gain distribution [1]. We experimentally study mode interactions between coupled, epitaxially-grown InP microdisks, with diameters in the micron range that support resonant whispering gallery modes (Fig. 1a) [2].

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