Saturable absorption by carbon nanotubes on silica microtoroids for stable mode locking
Saturable absorption by carbon nanotubes on silica microtoroids for stable mode locking
复制标题
二氧化硅微环形管上碳纳米管的饱和吸收，实现稳定锁模
DOI：
10.1117/12.2291874
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Tanabe Takasumi
中科院分区：
文献类型：
--
作者：
Kumagai Tsutaru;Hirota Naoya;Sato Katsuya;Namiki Koki;Hori Atsuhiro;Maki Hideyuki;Tanabe Takasumi
高Q值光学微腔和可饱和吸收体的组合有望实现微腔中不同横模之间的锁模。本工作研究了碳纳米管在微环面上的饱和吸收。采用化学气相沉积的方法，将钴催化剂选择性地沉积在二氧化硅微环的表面，实现了碳纳米管的选择性生长。拉曼光谱测量表明，所生长的碳纳米管直径约为1.0 nm，适用于1550 nm波段。利用反向传输泵浦-探测实验研究了碳纳米管的饱和吸收。
The combination of a high-Qoptical microcavity and a saturable absorber is expected to enable mode locking between different transverse modes in a microcavity. This work studies saturable absorption in carbon nanotubes (CNTs) on microtoroids. The CNTs are selectively grown on silica microtoroids by chemical vapor deposition after the cobalt catalysis is selectively deposited on the surface. A Raman spectrum measurement showed that the grown CNTs are about 1.0 nm in diameter, and that the device is applicable for use in the 1550 nm band. The saturable absorption by CNTs is investigated with a counter-propagating pump-probe experiment.