Directional bistability in novel semiconductor ring lasers with retro-reflector microcavity

Z Wang, G Yuan, S Yu

Research output: Contribution to journalArticle (Academic Journal)peer-review

13 Citations (Scopus)

Abstract

Lasing direction bistability is observed in a novel semiconductor ring laser with very small retro-reflector cavities with equivalent circular radius of 26 and 16 mum and with 4- and 2-port configurations. The optical spectra from both the clockwise and counterclockwise lasing directions demonstrate the characteristic mode hopping that accompanies the flipping of free-running lasing direction with the increase of injection current. Strong bistability is achieved at high currents and also enhanced at lower operation temperature, which indicates that it is driven by the nonlinear mode competition that depends strongly on the intensity of the optical field in the cavity.
Translated title of the contributionDirectional bistability in novel semiconductor ring lasers with retro-reflector microcavity
Original languageEnglish
Pages (from-to)1048 - 1050
Number of pages3
JournalIEEE Photonics Technology Letters
Volume20 (12)
DOIs
Publication statusPublished - Jun 2008

Bibliographical note

Publisher: IEEE

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