Maximum operating temperature of the 1.3 μm strained layer multiple quantum well InGaAsP lasers

We report on an experimental verification of a phenomenological model describing high-power and high-temperature operation of a compressively strained, InGaAsP multiple quantum well ridge-waveguide laser. The model, based on an assumption that mainly crystal heating defines optical output power saturation, has been proved to adequately describe the experimental results on maximum operating temperature of the lasers.