Fig. 1: Design of the 60 GHz QD mode-locked laser | Light: Science & Applications

Fig. 1: Design of the 60 GHz QD mode-locked laser

From: Broadband quantum-dot frequency-modulated comb laser

Fig. 1

a Schematic of the InAs/GaAs colliding-pulse QD laser. The total cavity length is 1.35 mm, and the saturable absorber whose length is 7.8% of the total cavity length is placed at the center of the cavity. b Cross-section SEM image of the shallow-etched FP cavity. c Schematic diagram of the epitaxial structure

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