We report on 800 fs pulse generation, at 134 GHz, using a Fabry-Perot quantum dash laser at 1.56 Mm. A 50 kHz RF spectral linewidth at 42 GHz is also demonstrated.
Articles you may be interested inTemperature dependence of electroabsorption dynamics in an InAs quantum-dot saturable absorber at 1.3 μ m and its impact on mode-locked quantum-dot lasers Appl. Phys. Lett. 97, 121110 (2010); 10.1063/1.3489104Pulse generation at 346 GHz using a passively mode locked quantum-dash-based laser at 1.55 μ m Ultrashort, high-power pulse generation from a master oscillator power amplifier based on external cavity mode locking of a quantum-dot two-section diode laserWe demonstrate passive mode locking in one-section monolithic semiconductor laser diodes based on quantum-dash active layer at very high repetition rate in the 1.5 m window. Transform-limited pulses are generated at 134 GHz with subpicosecond width, without any pulse compression scheme. A 50 kHz linewidth of the radio-frequency spectrum is also demonstrated at 42 GHz, the lowest value reported for any passively mode-locked semiconductor laser. We further show that the saturable absorption section in two-section devices has no significant impact on the mode-locking behavior.
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