Application of spectral phase shaping to high resolution CARS spectroscopy.
Application of spectral phase shaping to high resolution CARS spectroscopy.
复制标题
光谱相位整形在高分辨率 CARS 光谱中的应用。
DOI：
10.1364/oe.16.007985
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发表时间：
2008
期刊：
影响因子：
3.8
通讯作者：
H. Offerhaus
中科院分区：
文献类型：
--
作者：
S. Postma;A. V. van Rhijn;J. Korterik;P. Gross;J. Herek;H. Offerhaus
通过相干反斯托克斯拉曼散射（CARS）光谱中泵浦和探测脉冲的光谱相位整形，我们演示了振动线的频率、带宽和相对横截面的提取。我们采用与 ps-Nd:YVO 锁模激光器同步的可调谐宽带 Ti:Sapphire 激光器。高分辨率光谱相位整形器可在 3000 cm(-1) 左右的高频区域实现优于 1 cm(-1) 的光谱精度。我们还展示了新的光谱相位整形策略如何将孤立振动的共振特征放大到这样的程度，使得光谱学和显微镜可以在不需要光谱仪的情况下在集成光谱响应上以高分辨率完成。
By spectral phase shaping of both the pump and probe pulses in coherent anti-Stokes Raman scattering (CARS) spectroscopy we demonstrate the extraction of the frequencies, bandwidths and relative cross sections of vibrational lines. We employ a tunable broadband Ti:Sapphire laser synchronized to a ps-Nd:YVO mode locked laser. A high resolution spectral phase shaper allows for spectroscopy with a precision better than 1 cm(-1) in the high frequency region around 3000 cm(-1). We also demonstrate how new spectral phase shaping strategies can amplify the resonant features of isolated vibrations to such an extent that spectroscopy and microscopy can be done at high resolution, on the integrated spectral response without the need for a spectrograph.