Wide-Field Detected Fourier Transform CARS Microscopy.

Wide-Field Detected Fourier Transform CARS Microscopy.
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DOI:
10.1038/srep37516
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发表时间:
2016-11-24
期刊:
影响因子:
4.6
通讯作者:
Kukura P
Kukura P
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Duarte AS;Schnedermann C;Kukura P

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我们提出了一种宽视场成像实现傅里叶变换相干反斯托克斯拉曼散射(宽视场检测FT-CARS)显微镜能够获得高对比度的无标记,但化学特定的图像在整个振动的“指纹”区域,适用于一个大的视野。照明光束的快速共振机械扫描与汽车信号的高灵敏度、基于相机的检测相结合,允许快速和直接的高光谱宽视场图像采集,同时最大限度地减少样品损坏。FT-CARS显微镜固有的控制泵浦和探测脉冲之间的时间延迟范围的能力允许微调光谱分辨率,带宽和成像速度,同时保持完整的占空比。我们概述了宽场检测FT-CARS显微镜的基本原理,并演示了它如何可以用作化学特异性拉曼成像的灵敏光学探针。
We present a wide-field imaging implementation of Fourier transform coherent anti-Stokes Raman scattering (wide-field detected FT-CARS) microscopy capable of acquiring high-contrast label-free but chemically specific images over the full vibrational ‘fingerprint’ region, suitable for a large field of view. Rapid resonant mechanical scanning of the illumination beam coupled with highly sensitive, camera-based detection of the CARS signal allows for fast and direct hyperspectral wide-field image acquisition, while minimizing sample damage. Intrinsic to FT-CARS microscopy, the ability to control the range of time-delays between pump and probe pulses allows for fine tuning of spectral resolution, bandwidth and imaging speed while maintaining full duty cycle. We outline the basic principles of wide-field detected FT-CARS microscopy and demonstrate how it can be used as a sensitive optical probe for chemically specific Raman imaging.
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