Saturable absorption by carbon nanotubes on silica microtoroids for stable mode locking

Tsutaru Kumagai, Naoya Hirota, Katsuya Sato, Koki Namiki, Atsuhiro Hori, Hideyuki Maki, Takasumi Tanabe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish
Title of host publicationLaser Resonators, Microresonators, and Beam Control XX
PublisherSPIE
Volume10518
ISBN (Electronic)9781510615212
DOIs
Publication statusPublished - 2018 Jan 1
Event20th Conference on Laser Resonators, Microresonators and Beam Control - San Francisco, United States
Duration: 2018 Jan 292018 Feb 1

Other

Other20th Conference on Laser Resonators, Microresonators and Beam Control
CountryUnited States
CitySan Francisco
Period18/1/2918/2/1

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Keywords

  • carbon nanotubes
  • microcavity
  • mode locking
  • pump-probe experiment
  • saturable absorber

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Kumagai, T., Hirota, N., Sato, K., Namiki, K., Hori, A., Maki, H., & Tanabe, T. (2018). Saturable absorption by carbon nanotubes on silica microtoroids for stable mode locking. In Laser Resonators, Microresonators, and Beam Control XX (Vol. 10518). [105180H] SPIE. https://doi.org/10.1117/12.2291874