Abstract

High-quality AIGaAs/GaAs lasers with a stable single longitudinal mode, low threshold current, narrow spectral linewidth, and stable dynamic behavior are necessary for fiber-optic sensors, laser printers, optical disk memory systems, and GaAs-integrated optoelectronic circuits. Recently, we reported stable single-longitudinal-mode operation of ridge waveguide AIGaAs/GaAs distributed-feedback (DFB) lasers with low-threshold current.¹ It has been demonstrated that multiple-quantum-well (MQW) lasers have superior properties such as lower threshold current density,² less temperature dependence,³ better dynamic behavior,⁴ and narrower spectral linewidth.⁴ We report for the first time fabrication and fundamental characteristics of the ridge waveguide AIGaAs/GaAs DFB lasers with a MQW structure.

© 1986 Optical Society of America