Spectral shaping of lasing in vertically aligned coupled nanowire lasers

Ran Ditcovski*, Tal Ellenbogen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We use numerical simulations to study the effects of nanowire geometry on the emission spectra of nanowire-based lasers. The studied nanowire lasers are made from gallium-nitride and the simulations are performed using finite difference time domain method. We show that changes in the diameter of the nanowire lasers also change the effective refractive index of their optical guided modes, which allows control over their Fabry–Perot spectrum. In addition, we show that evanescent coupling of two vertically standing nanowire lasers, having different cross section sizes, leads to a Vernier effect, which results in single mode emission from the small footprint coupled lasers system.

Original languageEnglish
Pages (from-to)30115-30123
Number of pages9
JournalOptics Express
Issue number24
StatePublished - 27 Nov 2017


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