Transverse magnetic emissions of GaAs unstrained quantum-well microcavity lasers

Takehiro Fukushima, Susumu Shinohara, Satoshi Sunada, Takahisa Harayama, Koichiro Sakaguchi, Yasunori Tokuda

    Research output: Chapter in Book/Report/Conference proceedingConference contribution


    We investigated the polarization characteristics of emissions from two-dimensional microcavity laser diodes. For an unstrained single-quantum-well active layer structure, an argument based on the interband optical transition usually leads to the lasing of transverse electric (TE) rather than transverse magnetic (TM) modes. Indeed, we observed TE-polarized emissions for the excitation of modes quantized along a one-dimensional (Fabry-Perot) orbit. However, when selectively pumping modes quantized along a diamond-shaped ray orbit, we observed TM-polarized emissions. These unusual TM-polarized emissions can be explained by the fact that the incident angles of the diamond-shaped orbit are very close to the Brewster angle, making corresponding TE modes too leaky to be excited. This mode-dependent polarization leads us to propose a microcavity laser diode with the function of polarization switching.

    Original languageEnglish
    Title of host publicationInternational Conference on Transparent Optical Networks
    PublisherIEEE Computer Society
    ISBN (Print)9781467378802
    Publication statusPublished - 2015 Aug 12
    Event17th International Conference on Transparent Optical Networks, ICTON 2015 - Budapest, Hungary
    Duration: 2015 Jul 52015 Jul 9


    Other17th International Conference on Transparent Optical Networks, ICTON 2015


    • Brewster angle
    • Laser diode
    • Microcavity
    • Polarization switching
    • Transverse electric emission
    • Transverse magnetic emission

    ASJC Scopus subject areas

    • Computer Networks and Communications
    • Electrical and Electronic Engineering
    • Electronic, Optical and Magnetic Materials


    Dive into the research topics of 'Transverse magnetic emissions of GaAs unstrained quantum-well microcavity lasers'. Together they form a unique fingerprint.

    Cite this