Passive mode locking of InAlGaAs 1.3-μm strained quantum wells extended cavity laser fabricated by quantum-well intermixing

We demonstrate continuous-wave operation and passive mode locking of extended cavity lasers fabricated in 1.3-μm InAlGaAs strained multiple quantum-wells structure. Modal losses were measured for the passive section fabricated by quantum-well intermixing. Pulse duration of 1.7 ps was deduced from intensity autocorrelation measurement.