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Proceedings Paper

Saturable absorption by carbon nanotubes on silica microtoroids for stable mode locking
Author(s): Tsutaru Kumagai; Naoya Hirota; Katsuya Sato; Koki Namiki; Atsuhiro Hori; Hideyuki Maki; Takasumi Tanabe
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Paper 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.

Paper Details

Date Published: 16 February 2018
PDF: 7 pages
Proc. SPIE 10518, Laser Resonators, Microresonators, and Beam Control XX, 105180H (16 February 2018); doi: 10.1117/12.2291874
Show Author Affiliations
Tsutaru Kumagai, Keio Univ. (Japan)
Naoya Hirota, Keio Univ. (Japan)
Katsuya Sato, Keio Univ. (Japan)
Koki Namiki, Keio Univ. (Japan)
Atsuhiro Hori, Keio Univ. (Japan)
Hideyuki Maki, Keio Univ. (Japan)
JST-PRESTO (Japan)
Takasumi Tanabe, Keio Univ. (Japan)


Published in SPIE Proceedings Vol. 10518:
Laser Resonators, Microresonators, and Beam Control XX
Alexis V. Kudryashov; Alan H. Paxton; Vladimir S. Ilchenko, Editor(s)

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