Unidirectional bistability in AlGaInAs microring and microdisk semiconductor lasers

G Mezosi, M.J. Strain, S Furst, Z Wang, S Yu, M. Sorel

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


We report on room-temperature continuous-wave operation and single-mode lasing of microdisk and microring lasers with radii as small as 7 mum. The waveguide sidewall roughness was minimized by an optimized fabrication process using hydrogen silsesquioxane e-beam resist and Cl 2-CH 3-H 2 inductively coupled plasma etching. The devices show unidirectional bistability between the counterpropagating modes for radii larger than 30 mu m and a strong hybrid output polarization for radii smaller than 15 mum with a transverse-magnetic component of approximately 30%.
Original languageEnglish
Pages (from-to)88-90
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number2
Publication statusPublished - 15 Jan 2009


  • gallium arsenide
  • III-V semiconductors
  • microdisc lasers
  • sputter etching


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