SEMICONDUCTOR LASER ELEMENT, METHOD OF MANUFACTURING SEMICONDUCTOR LASER ELEMENT, AND OPTICAL MODULE

摘要

In order to provide a semiconductor laser element or an integrated optical device with high reliability, a horizontal-cavity semiconductor laser or an optical module includes a deeply dug DBR mirror serving as a cavity mirror, the deeply dug DBR mirror being composed of a material that is lattice-matched to a substrate and that has a band gap energy that does not absorb light emitted from an active layer.