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首页> 外文期刊>Pramana >Compact fibre-based coherent anti-Stokes Raman scattering spectroscopy and interferometric coherent anti-Stokes Raman scattering from a single femtosecond fibre-laser oscillator
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Compact fibre-based coherent anti-Stokes Raman scattering spectroscopy and interferometric coherent anti-Stokes Raman scattering from a single femtosecond fibre-laser oscillator

机译：来自单个飞秒光纤激光振荡器的紧凑型基于光纤的相干抗斯托克斯拉曼散射光谱和干涉相干抗斯托克斯拉曼散射

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摘要

We demonstrate a new approach to CARS spectroscopy by efficiently synthesizing synchronized narrow-bandwidth (less than 10 cm−1) pump and Stokes pulses (frequency difference continuously tunable upto ≈3000 cm−1) based on spectral compression together with second harmonic generation (in periodically-poled nonlinear crystals) of femtosecond pulses emitted by a single compact Er-fibre oscillator. For a far better signal to non-resonant background contrast, interferometric CARS (I-CARS) is demonstrated and CARS signal enhancement upto three orders of magnitude is achieved by constructive interference with an auxiliary local oscillator at anti-Stokes field, also synthesized by spectral compression of pulses emitted from the same fibre oscillator.
机译：我们通过基于频谱有效地合成同步窄带宽（小于10 cm-1 ）的泵浦和Stokes脉冲（频率差可连续可调至≈3000cm-1 ），展示了一种用于CARS光谱的新方法压缩以及单个紧凑型Er光纤振荡器发出的飞秒脉冲的二次谐波（在周期性极化的非线性晶体中）。为了获得更好的非共振背景对比度信号，对干涉式CARS（I-CARS）进行了演示，并且通过在反斯托克斯场与辅助本地振荡器进行相长干涉，将CARS信号增强到三个数量级，这也是由频谱合成的压缩同一光纤振荡器发出的脉冲。

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  • 来源
    《Pramana》 |2010年第6期|p.1129-1134|共6页
  • 作者

    Vikas Kumar; Alessio Gambetta; Cristian Manzoni; Roberta Ramponi; Giulio Cerullo; Marco Marangoni;

  • 作者单位

    Dipartmento di Fisica-Politecnico di Milano, ULTRAS-CNR-INFM, IFN-CNR, Piazza Leonardo da Vinci 32, 20133, Milano, Italy;

    Dipartmento di Fisica-Politecnico di Milano, ULTRAS-CNR-INFM, IFN-CNR, Piazza Leonardo da Vinci 32, 20133, Milano, Italy;

    Dipartmento di Fisica-Politecnico di Milano, ULTRAS-CNR-INFM, IFN-CNR, Piazza Leonardo da Vinci 32, 20133, Milano, Italy;

    Dipartmento di Fisica-Politecnico di Milano, ULTRAS-CNR-INFM, IFN-CNR, Piazza Leonardo da Vinci 32, 20133, Milano, Italy;

    Dipartmento di Fisica-Politecnico di Milano, ULTRAS-CNR-INFM, IFN-CNR, Piazza Leonardo da Vinci 32, 20133, Milano, Italy;

    Dipartmento di Fisica-Politecnico di Milano, ULTRAS-CNR-INFM, IFN-CNR, Piazza Leonardo da Vinci 32, 20133, Milano, Italy;

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  • 正文语种 eng
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  • 关键词

    Coherent anti-Stokes Raman scattering; nonlinear spectroscopy; coherent spectroscopy; interferometric CARS;

    机译：相干反斯托克斯拉曼散射非线性光谱相干光谱干涉汽车;

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