Low-threshold and high-temperature operation of InGaAlP-based proton-implanted red VCSELs

Abstract

InGaAlP-based red vertical-cavity surface-emitting lasers (VCSELs) are attractive light sources for plastic optical fiber (POF)-based low-cost and high-speed data links, because the POF has a low-loss window around the 650-nm wavelength region, and VCSELs are suitable for high-speed modulation and can be treated easily as is the case for LEDs. We have fabricated InGaAlP-based red VCSELs using the proton-implanted planar structures, and realized continuous-wave (CW) operation up to 60/spl deg/C with the lasing wavelength of 666 nm and the threshold current of 2.5 mA.