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Laser emission with excitonic gain in a ZnO planar microcavity

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 نشر من قبل Thierry Guillet
 تاريخ النشر 2011
  مجال البحث فيزياء
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 تأليف Thierry Guillet




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The lasing operation of a ZnO planar microcavity under optical pumping is demonstrated from T=80 K to 300 K. At the laser threshold, the cavity switches from the strong coupling to the weak coupling regime. A gain-related transition, which appears while still observing polariton branches and, thus, with stable excitons, is observed below 240K. This shows that exciton scattering processes, typical of II-VI semiconductors, are involved in the gain process.



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