Current-dependent spectral blueshift in a three-dimensional photonic-quantum-ring laser.
The emission spectra of photonic-quantum-ring lasers can be explained by a three-dimensional Rayleigh-Fabry-Perot cavity resonance model. The proposed model for the emission spectral peaks fits well with the observed blueshift of the emission spectrum envelope as a function of the view angle. Furthermore, we observe that the emission spectra with the high-order mode index showed blueshift behaviors as functions of the injection current, whereas those with the low-order mode index showed redshift behaviors. These phenomena might result in lowering the effective refractive index by the carrier inhomogeneity in the active disk.
Department of Electronic and Electrical Engineering, Pohang University of Science and Technology, Pohang 790-784, South Korea.
Sung-Jae
SJ
An
Joongwoo
J
Bae
Vladimir G
VG
Minogin
O'Dae
O
Kwon