Fig. 3: Experimental demonstration of short-pulse generation in self-evolving photonic crystals.
From: Self-evolving photonic crystals for ultrafast photonics
a Scanning electron microscope image of a fabricated double-lattice photonic crystal. b Streak camera image of the fabricated device at an injection current of 20.9 A. c Temporal change of the output power of the device at an injection current of 20.6 A. d Peak power and average power of the device as a function of injection current. Orange and gray lines are drawn for visual guidance. e Pulse width as a function of injection current. f Pulse repetition frequency as a function of injection current. g Measured far-field beam pattern at an injection current of 20.6 A. \({\theta }_{1/{e}^{2}}\) is the average value of the divergence angles evaluated at 1/e2 of the maximum in the x and y directions.
