High temperature characteristics of stripe-geometry InGaAsP/InP double-heterostructure lasers

This paper presents high temperature characteristics of stripe-geometry InGaAsP/InP double-heterostructure lasers with an emission wavelength of 1.3μm. To evaluate how thermal characteristics such as heat dissipated power, thermal resistance, and temperature increase in the quaternary active region contribute to CW operation, and to derive conditions for stable operation at high temperatures, these thermal characteristics were analyzed for gain-guiding lasers and refractive index-guiding lasers as a function of stripe width and cavity length. Using proton bombarded lasers and self-aligned lasers, oscillation behavior was examined at above room temperature and compared with the analytical results.