16 February 2018 Saturable absorption by carbon nanotubes on silica microtoroids for stable mode locking
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Abstract
The combination of a high-Q optical 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.
Conference Presentation
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Tsutaru Kumagai, Tsutaru Kumagai, Naoya Hirota, Naoya Hirota, Katsuya Sato, Katsuya Sato, Koki Namiki, Koki Namiki, Atsuhiro Hori, Atsuhiro Hori, Hideyuki Maki, Hideyuki Maki, Takasumi Tanabe, Takasumi Tanabe, } "Saturable absorption by carbon nanotubes on silica microtoroids for stable mode locking", Proc. SPIE 10518, Laser Resonators, Microresonators, and Beam Control XX, 105180H (16 February 2018); doi: 10.1117/12.2291874; https://doi.org/10.1117/12.2291874
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