Semiconductor snail lasers

Strain, Michael and Mezosi, G and Javaloyes, Julien and Sorel, Marc and Perez-Serrano, Antonio and Scirè, Alessandro and Balle, Salvador and Danckaert, Jan and Verschaffelt, Guy (2010) Semiconductor snail lasers. Applied Physics Letters, 96 (12). 121105. ISSN 0003-6951 (

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A modified ring laser geometry is presented to promote stable unidirectional lasing. The effects of directional coupling and facet reflectivities are investigated with respect to quantum efficiency, directionality, and side-mode suppression ratio of the lasing spectra. Simulation and experimental results are presented showing single mode (>20 dB side-mode suppression ratio), unidirectional lasing on an InP based multiple quantum well material.