Closely Spaced Independently Addressable Dual-Beam Visible Lasers with Strained GaInP Quantum Wells

Abstract
Closely spaced (15 µ m center-to-center spacing) independently addressable dual-beam visible lasers were demonstrated using strained GaInP quantum well structures. Crosstalk characteristics were studied experimentally as well as theoretically. The estimated crosstalk of uncoated devices was around 3% with bias, and 10% without bias in CW-mode operation. The value of 3% was small enough for applications such as printers and optical disks.