High-power 780-nm-band AlGaAs laser diodes with rectangular ridge structure

Summary form only given. A high-power 780-nm-band AlGaAs laser diode with stabilized transverse mode is an attractive light source for recordable optical disc systems. To achieve a high recording speed onto the optical disc, it is necessary to increase the light output power of the laser diode. High power operation of more than 100 mW for 780-nm-band laser diodes has been reported. These laser diodes, however, has insufficient light output power and reliability for practical use in high-speed recordable optical disc systems such as the compact disk recordable system, where the recording speed is more than 10 times as fast as the standard one. We report on high-power 780nm-band A1GaAs laser diodes with a rectangular ridge structure. These laser diodes have demonstrated a maximum light output power of 220 mW. This is the highest value ever reported for 780-nm-band laser diodes to our knowledge. We also confirmed reliability of these laser diodes under 130-mW pulsed operation.