Zhang Guoqiang, Takiguchi Masato, Tateno Kouta, Tawara Takehiko, Notomi Masaya, Gotoh Hideki
NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0198, Japan.
NTT Nanophotonics Center, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0198, Japan.
Sci Adv. 2019 Feb 22;5(2):eaat8896. doi: 10.1126/sciadv.aat8896. eCollection 2019 Feb.
Telecom-band single nanowire lasers made by the bottom-up vapor-liquid-solid approach, which is technologically important in optical fiber communication systems, still remain challenging. Here, we report telecom-band single nanowire lasers operating at room temperature based on multi-quantum-disk InP/InAs heterostructure nanowires. Transmission electron microscopy studies show that highly uniform multi-quantum-disk InP/InAs structure is grown in InP nanowires by self-catalyzed vapor-liquid-solid mode using indium particle catalysts. Optical excitation of individual nanowires yielded lasing in telecom band operating at room temperature. We show the tunability of laser wavelength range in telecom band by modulating the thickness of single InAs quantum disks through quantum confinement along the axial direction. The demonstration of telecom-band single nanowire lasers operating at room temperature is a major step forward in providing practical integrable coherent light sources for optoelectronics and data communication.
通过自下而上的气-液-固方法制造的电信波段单纳米线激光器，在光纤通信系统中具有重要的技术意义，但仍然具有挑战性。在此，我们报道了基于多量子盘InP/InAs异质结构纳米线在室温下工作的电信波段单纳米线激光器。透射电子显微镜研究表明，使用铟颗粒催化剂通过自催化气-液-固模式在InP纳米线中生长出高度均匀的多量子盘InP/InAs结构。对单个纳米线的光激发在室温下产生了电信波段的激光发射。我们通过沿轴向的量子限制调制单个InAs量子盘的厚度，展示了电信波段激光波长范围的可调性。室温下工作的电信波段单纳米线激光器的演示是为光电子学和数据通信提供实用的可集成相干光源方面向前迈出的重要一步。
