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2006 Fiscal Year Final Research Report Summary

Optical Nonlinearity of Carbon Nanotube and Its Application to Ultrafast Optical Pulse monitor

Research Project

Project/Area Number 17560035
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Applied optics/Quantum optical engineering
Research InstitutionOsaka Prefecture University

Principal Investigator

WADA Kenji  Osaka Prefecture University, Graduate School of Engineering, Associate Professor, 工学研究科, 助教授 (40240543)

Co-Investigator(Kenkyū-buntansha) HORINAKA Hiromichi  Osaka Prefecture University, Graduate School of Engineering, Professor, 工学研究科, 教授 (60137239)
Project Period (FY) 2005 – 2006
Keywordssingle-walled carbon nanotube / ultrafast optical pulse / autocorrelation measurements
Research Abstract

The aim of this research was to utilize the optical nonlinearity of single walled carbon nanotubes (SWCNTs) in monitoring ultrafast optical pulses. The results obtained are categorized into three parts as below.
1.Measurements of nonlinear coefficients of SWCNTs : The Z-scan method was applied to determine the nonlinear coefficients of absorption a_2 and refractive index n_2 for SWCNTs. The both values measured at a wavelength of 790 nm have negative sign and their absolute values were 3.3x10^3cm/GW (for a_2) and 0.53 cm^2/GW (for n_2), respectively, which were relatively large when compared with those of other nonlinear materials. However, they were only hundredth part of the values of SWCNTs measured at 1550 nm.
2.Pulse compression of picosecond chirped pulse form gain-switched laser diodes : To prepare a compact ultrafast optical pulse source, a new pulse compression method for gain-switched laser diode pulses using an optical interferometer was proposed and examined numerically. As a result, a gain-switched pulse having 30 ps duration was found to be compressed effectively to around 10 ps by applying this method.
3.Pulse monitoring autocorrelator with SWCNTs as nonlinear elements : An autocorrelator with SWCNTs for monitoring ultrafast optical pulses was developed. Using the autocorrelator, an autocorrelation trace of 100 fs pulses from a mode-locked Ti : sapphire laser was observed successfully.

  • Research Products

    (4 results)

All 2006 2005

All Journal Article (4 results)

  • [Journal Article] 半導体レーザーの注入変調チャープパルスに対する光ファイバーカップラーを用いたパルス圧縮2006

    • Author(s)
      佐藤秀樹, 他5名
    • Journal Title

      光学 35巻・8号

      Pages: 434-441

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Pulse compression of chirped pulse from a gain-switched 1 laser diode using optical fiber couplers2006

    • Author(s)
      Hideki Sato, et al.
    • Journal Title

      Kogaku (in Japanese, Optical Society of Japan) Vol.35, No.8

      Pages: 434-441

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Suppression of side fringes in low-coherence interferometric measurements using gain- or loss-modulated laser diodes2005

    • Author(s)
      Kenji Wada, 他4名
    • Journal Title

      Japanese Journal of Applied Physics Vol. 44, No. 12

      Pages: 8484-8490

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Suppression of side fringes in low-coherence interferometric measurements using gain- or loss-modulated laser diodes2005

    • Author(s)
      Kenji Wada, et al.
    • Journal Title

      Japanese Journal of Applied Physics Vol.44, No.12

      Pages: 8484-8490

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2008-05-27  

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