Mode-Locked Fiber Lasers Using Adjustable Saturable Absorption in Vertically Aligned Carbon Nanotubes

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Published 28 December 2005 • Copyright (c) 2006 The Japan Society of Applied Physics
, , Citation Shinji Yamashita et al 2006 Jpn. J. Appl. Phys. 45 L17 DOI 10.1143/JJAP.45.L17

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1 Department of Electronic Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

2 Department of Frontier Informatics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

3 Department of Mechanical Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

4 Alnair Labs Corporation, 6-3-14 Kawaguchi, Kawaguchi, Saitama 332-0015, Japan

Dates

  1. Received 12 September 2005
  2. Accepted 10 November 2005
  3. Published

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Abstract

We report an adjustable saturable absorber based on vertically aligned single-walled carbon nanotubes (SWNTs). Using the low-temperature alcohol catalytic chemical vapor deposition (CVD) method, high-quality vertically aligned SWNTs were directly synthesized onto quartz substrates. The saturable absorption is adjustable by changing the decline angle of the substrate. We applied it as a mode-locker in the passively mode-locked fiber lasers, and optimized the operation by declining the vertically aligned SWNT sample.

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10.1143/JJAP.45.L17