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GaAs-AlGaAs single quantum well self-aligned lasers have been developed for optical disc recording. The lasers emitting at 834 nm have realised low optical feedback noise as well as high output power. The lasers have shown less than -130 dB/Hz relative intensity noise at 3 mW, and stable 50 mW operation (over 500 hours at 50 degrees C ambient).<<ETX>>
0.78 mu m self-aligned AlGaAs lasers have been developed for optical disc recording. The lasers have shown a small astigmatism (<3 mu m), low-noise characteristics (RIN<-126 dB/Hz at 3 mW) and stable 30 mW operation (over 1800 hours at 50 degrees C).<<ETX>>
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