Abstract
Lasing mechanisms in ZnO near the Mott density was investigated by temperature dependent gain in a ZnO thin film using a variable stripe length method (VSLM). Below the Mott density, gain is attributed to exciton‐longitudinal optical phonon scattering and inelastic exciton‐exciton scattering, which are dominated up to 130 K. Above the Mott density, we found an additional gain mechanism of electron‐hole plasmon‐phonon mixed state, which survives up to RT.
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