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In this paper, we present a diode-pumped, solid-state waveguide laser operating near 1550 nm that is passively mode-locked using a quantum-dot SESAM. A fundamental repetition rate of up to 6.8 GHz with an output power of 30 mW was achieved during mode-locked operation. Pulse durations as short as 2.5 ps were measured at a repetition rate of 4.8 GHz. Fine control of the of the repetition rate was demonstrated by varying the pump power and a tuning range of up to 1 MHz was demonstrated.

Diode-pumped, 6.8 GHz, solid-state waveguide laser mode-locked at 1.5 μm by a quantum-dot SESAM