Real-time terahertz near-field microscope
Real-time terahertz near-field microscope
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DOI：
10.1364/oe.19.008277
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发表时间：
2011-04-25
期刊：
影响因子：
3.8
通讯作者：
Tanaka, K.
中科院分区：
文献类型：
--
作者：
Blanchard, F.;Doi, A.;Tanaka, K.
我们报道了一台具有高动态范围的太赫兹近场显微镜，它可以以每秒35帧的速度捕捉370×740微米(2)区域的图像。我们将倾斜脉冲前沿激发产生太赫兹和薄晶体电光平衡成像探测两种新技术相结合，实现了大面积高空间分辨率(14微米对应于中心频率为0.7太赫兹的波长/30)。为了展示显微镜的性能，我们揭示了在太赫兹脉冲照射下偶极子天线缝隙位置的场增强。(C)2011年美国光学学会
We report a terahertz near-field microscope with a high dynamic range that can capture images of a 370 x 740 mu m(2) area at 35 frames per second. We achieve high spatial resolution (14 mu m corresponding to lambda/30 for a center frequency at 0.7 THz) on a large area by combining two novel techniques: terahertz generation by tilted-pulse-front excitation and electro-optic balanced imaging detection using a thin crystal. To demonstrate the microscope capability, we reveal the field enhancement at the gap position of a dipole antenna after the irradiation of a terahertz pulse. (C) 2011 Optical Society of America