Abstract
A high-power laser diode (>30mW) emitting at around 650nm is indispensable for a DVD-RAM system. Moreover, high-temperature operation (>-60°C) and high reliability are strongly required. In order to satisfy these requirements, optimization of active layer structure and development of a mirror hardening technology such as a window-mirror are introduced. In addition, some excellent laser performances that it suffers no optical damage up to 150mW and exhibits reliable 30-50mW operation at high-temperatures are presented.
