Hollow-pyramid based scanning near-field optical microscope coupled to femtosecond pulses: a tool for nonlinear optics at the nanoscale.
Hollow-pyramid based scanning near-field optical microscope coupled to femtosecond pulses: a tool for nonlinear optics at the nanoscale.
复制标题
基于空心金字塔的扫描近场光学显微镜与飞秒脉冲耦合：纳米级非线性光学工具。
DOI：
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发表时间：
2009
影响因子：
1.6
通讯作者：
G. Cerullo
中科院分区：
文献类型：
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作者：
M. Celebrano;P. Biagioni;M. Zavelani‐Rossi;D. Polli;M. Labardi;M. Allegrini;M. Finazzi;L. Duò;G. Cerullo
我们描述了一个孔径扫描近场光学显微镜（SNOM）使用悬臂空心棱锥探头耦合到飞秒激光脉冲。相对于锥形光纤，这样的探针具有更高的吞吐量和激光功率损伤阈值，以及更大的机械鲁棒性。此外，它们在近场中保持脉冲持续时间和偏振。该仪器可以在两种配置下操作：照明模式，其中SNOM探头用于激发近场中的非线性响应，以及收集模式，其中它收集远场激发后的非线性发射。我们目前的应用程序的例子，突出了该系统的能力，以观察纳米结构的金属表面（金投影图案和金纳米棒）的非线性光学响应与子100 nm的空间分辨率。
We describe an aperture scanning near-field optical microscope (SNOM) using cantilevered hollow pyramid probes coupled to femtosecond laser pulses. Such probes, with respect to tapered optical fibers, present higher throughput and laser power damage threshold, as well as greater mechanical robustness. In addition, they preserve pulse duration and polarization in the near field. The instrument can operate in two configurations: illumination mode, in which the SNOM probe is used to excite the nonlinear response in the near field, and collection mode, where it collects the nonlinear emission following far-field excitation. We present application examples highlighting the capability of the system to observe the nonlinear optical response of nanostructured metal surfaces (gold projection patterns and gold nanorods) with sub-100-nm spatial resolution.
影响因子：
4
作者：
Chowdhury, Mustafa H.;Catchmark, Jeffrey M.;Lakowicza, Joseph R.
通讯作者：
Lakowicza, Joseph R.