Grating integrated single mode microring laser

Amir Arbabi, Seyedeh Mahsa Kamali, Ehsan Arbabi, Benjamin G. Griffin, Lynford L. Goddard

Research output: Contribution to journalArticlepeer-review


Microring and microdisk lasers are potential candidates for small footprint, low threshold in-plane integrated lasers; however, they exhibit multimode lasing spectra and bistability. Here, we theoretically propose and experimentally demonstrate a novel approach for achieving single mode lasing in microring lasers. Our approach is based on increasing the radiation loss of all but one of the resonant modes of microring resonators by integrating second order gratings on the microrings' waveguide. We present single mode operation of electrically pumped semiconductor microring lasers whose lasing modes are lithographically selected via the second order grating. We also show that adding the grating does not increase the lasing threshold current significantly.

Original languageEnglish (US)
Pages (from-to)5335-5347
Number of pages13
JournalOptics Express
Issue number4
StatePublished - Feb 23 2015

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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