Broadband and high-speed swept external-cavity laser using a quantum-dot superluminescent diode as gain device
Hu Fa-Jie, Jin Peng†, Wu Yan-Hua, Wang Fei-Fei, Wei Heng, Wang Zhan-Guo
       
(a) Normalized emission spectra of the free-running QD gain device under different injection currents and (b) output power-injection current ( P – I ) curve of the free-running QD gain device.