Structure optimization of high speed intracavity-contacted oxide-confined VCSELs
This work presents the simulation of the intracavity contacted oxide confined vertical cavity surface emitting lasers (VCSEL) including the thermal effects. The analysis of thermal, electrical and optical phenomena represents the influence of geometrical parameters on power and modulation properties on such devices.
Current crowding in graded contact layers of intracavity-contacted oxide-confined vertical-cavity surface-emitting lasers
In this work we present the simulation of the intracavity-contacted oxide-confined vertical-cavity surface-emitting lasers including the thermal effects. We analyze the thermal, electrical, and optical properties of such devices with the different thicknesses of graded layers between the contact and oxide confined layers. Results of simulations for the devices with graded layer thickness of 40–60 A show a reduced current crowding effect.
Small-signal characteristics of bottom-emitting intracavity contacted VCSEL's
We characterize the small-signal frequency response of intracavity contacted /spl sim/970 nm VCSEL's designed for flip-chip bonding to electronic circuits and then modified with reduced capacitance and a novel lateral current injection method to obtain a high-speed response. We measure 3-dB bandwidths in excess of 10 GHz and an extracted K-factor limited f-max of 95 GHz for fabricated single-mode /spl sim/970-nm lasers.