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首页> 外文期刊>Advanced Functional Materials >Optimizing Single-Walled-Carbon-Nanotube-Based Saturable Absorbers for Ultrafast Lasers
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Optimizing Single-Walled-Carbon-Nanotube-Based Saturable Absorbers for Ultrafast Lasers

机译：优化用于超快激光器的单壁碳纳米管可饱和吸收剂

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摘要

The application of single-walled carbon nanotubes (SWCNTs) as saturable absorbers (SA) in a Nd:glass femtosecond laser is verified as a promising alternative to traditional semiconductor saturable-absorber mirrors (SESAMs). The shortest laser pulses achieved with a SWCNT-SA fabricated by the slow-evaporation method are reported herein. Nearly Fourier-limited 288 fs pulses are obtained with negative-dispersion soliton mode-locking. The importance of the properties of the starting material, such as the degree of purity and the chirality, and the successive slow-evaporation deposition method is proven by using a multitechnique approach based on X-ray dif-fractometry, scanning electron microscopy, and μ-Raman spectroscopy. The high degree of nanotube alignment on the glass substrate and also the slight metallic character due to electron transfer between the glass matrix and the nanotubes themselves are identified as the main features responsible for the good laser response.
机译：单壁碳纳米管（SWCNT）在Nd：玻璃飞秒激光器中作为可饱和吸收剂（SA）的应用已被证明是传统半导体可饱和吸收镜（SESAM）的有前途的替代方法。本文报道了用通过慢蒸发法制造的SWCNT-SA实现的最短激光脉冲。通过负色散孤子锁模获得了接近傅里叶极限的288 fs脉冲。通过使用基于X射线衍射，扫描电子显微镜和μ的多种技术方法，证明了原料性质（如纯度和手性）以及连续缓慢蒸发沉积方法的重要性。 -拉曼光谱。玻璃衬底上纳米管的高度排列以及由于玻璃基质与纳米管本身之间的电子转移引起的轻微金属特性被认为是产生良好激光响应的主要特征。

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  • 来源
    《Advanced Functional Materials》 |2012年第20期|p.4369-4375|共7页
  • 作者

    Stefania Ferrari; Marcella Bini; Doretta Capsoni; Pietro Galinetto; Marco Simone Grandi; Uwe Griebner; Guenter Steinmeyer; Antoniangelo Agnesi; Federico Pirzio; Elena Ugolotti; Giancarlo Reali; Vincenzo Massarotti;

  • 作者单位

    Department of Chemistry University of Pavia Via Taramelli 16, 27100 Pavia;

    Department of Chemistry University of Pavia Via Taramelli 16, 27100 Pavia;

    Department of Chemistry University of Pavia Via Taramelli 16, 27100 Pavia;

    Department of Physics University of Pavia Via Bassi, 27100 Pavia;

    Department of Physics University of Pavia Via Bassi, 27100 Pavia;

    Max-Born-Institute for Nonlinear Optics and Ultrafast Spectroscopy 2A-Max-Borrn Str., 12489 Berlin, Germany;

    Max-Born-Institute for Nonlinear Optics and Ultrafast Spectroscopy 2A-Max-Borrn Str., 12489 Berlin, Germany;

    Department of Electronics University of Pavia Via Ferrata 1, 27100 Pavia;

    Department of Electronics University of Pavia Via Ferrata 1, 27100 Pavia;

    Department of Electronics University of Pavia Via Ferrata 1, 27100 Pavia;

    Department of Electronics University of Pavia Via Ferrata 1, 27100 Pavia;

    Department of Chemistry University of Pavia Via Taramelli 16, 27100 Pavia;

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