Remote Raman Microimaging Using an AOTF and a Spatially Coherent Microfiber Optical Probe
Remote Raman Microimaging Using an AOTF and a Spatially Coherent Microfiber Optical Probe
复制标题
使用 AOTF 和空间相干微光纤探头进行远程拉曼显微成像
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
S. Angel
中科院分区：
文献类型：
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作者：
H. T. Skinner;T. F. Cooney;S. Sharma;S. Angel
介绍了一种光纤拉曼微成像探头，适用于在无清晰视线的采样情况下获取高空间分辨率的拉曼图像。高功率近红外二极管激光器与声光可调滤波器和空间相干光纤束相结合，可以在几米远的距离上获得远程样品的无荧光拉曼图像。通过拉曼图像证明了该技术的可行性：(1)含有高散射样品，双甲基苯基苯（BMSB）， KCl和石墨的混合物的球团，以及(2)部分石墨化的金刚石。这些图像清晰地显示了大约0.1 mm2区域内的相边界，分辨率为~ 4 μm。
A fiber-optic Raman microimaging probe is described that is suitable for acquiring high-spatial-resolution Raman images in sampling situations with no clear line of sight. A high-power near-infrared diode laser combined with an acousto-optic tunable filter and a spatially coherent optical fiber bundle allow fluorescence-free Raman images of remotely located samples to be acquired at distances up to several meters. The feasibility of this technique is demonstrated with Raman images of (1) a pellet containing a mixture of a highly scattering sample, bis-methylstyrylbenzene (BMSB), KCl, and graphite, and (2) a partially graphitized diamond. These images clearly show phase boundaries over an area of approximately 0.1 mm2 with ∼4-μm resolution.