Author/Authors :
Steube، نويسنده , , M and Reimann، نويسنده , , K and Frِhlich، نويسنده , , D and Clarke، نويسنده , , S.J، نويسنده ,
Abstract :
Two-photon spectroscopy allows to observe unambigously the free A, B, and C excitons with n=2 in bulk GaN. Their energies allow the precise determination of the three band gaps and of the exciton binding energies.
Keywords :
Nonlinear optics , excitons , Two-photon spectroscopy , electronic band structure , Gallium nitride
