Title :
Mode-partition noise in vertical-cavity surface-emitting lasers
Author :
Law, Joanne Y. ; Agrawal, Govind P.
Author_Institution :
Inst. of Opt., Rochester Univ., NY, USA
fDate :
4/1/1997 12:00:00 AM
Abstract :
We present a numerical study of the effects of carrier diffusion and spatial hole-burning on the noise characteristics of vertical-cavity surface-emitting lasers (VCSEL´s) under both single-mode and multimode operations. In the case of single-mode operation, VCSEL noise characteristics are similar to those of edge-emitting lasers except for a diffusion-induced damping of relaxation oscillations. Under multimode operation, VCSEL´s exhibit low-frequency noise enhancement due to mode partition. However, depending on the spatial distributions of the transverse modes excited, the mode-partition noise characteristics can be quite different.
Keywords :
carrier lifetime; laser cavity resonators; laser modes; laser noise; laser theory; optical hole burning; surface emitting lasers; VCSEL; carrier diffusion; diffusion-induced damping; low-frequency noise enhancement; mode-partition noise; multimode operation; noise characteristics; relaxation oscillations; single-mode operation; spatial distributions; spatial hole-burning; transverse modes; vertical-cavity surface-emitting lasers; Charge carrier density; Frequency; Laser modes; Laser noise; Low-frequency noise; Optical noise; Semiconductor device noise; Semiconductor lasers; Surface emitting lasers; Vertical cavity surface emitting lasers;
Journal_Title :
Photonics Technology Letters, IEEE
