PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
Spontaneous and stimulated emission spectroscopies were performed on transparent aluminum nitride (AlN) substrates grown by hydride vapor-phase epitaxy. The stimulated emission was observed from cryogenic to room temperatures and the origin was assigned by the spontaneous emission spectra and existing theories. AlN exhibited a purely excitonic stimulated emission at cryogenic temperatures, whereas the stimulated emission mechanism at room temperature originated from an exciton-electron scattering process. The temperature-induced and excitation-power-induced stimulated emission crossovers were found and interpreted in terms of the peculiar excitonic structure of AlN.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.