Ultrafast pump-probe force microscopy with nanoscale resolution

被引：77

作者：

Jahng, Junghoon ^{[1
]}

Brocious, Jordan ^{[1
]}

Fishman, Dmitry A. ^{[2
]}

Yampolsky, Steven ^{[2
]}

Nowak, Derek ^{[3
]}

Huang, Fei ^{[4
]}

Apkarian, Vartkess A. ^{[2
]}

Wickramasinghe, H. Kumar ^{[4
]}

Potma, Eric Olaf ^{[2
]}

机构：

[1] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA

[2] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA

[3] Mol Vista, San Jose, CA 95119 USA

[4] Univ Calif Irvine, Dept Elect Engn & Comp Sci, Irvine, CA 92697 USA

来源：

APPLIED PHYSICS LETTERS | 2015年 / 106卷 / 08期

基金：

美国国家科学基金会;

关键词：

OPTICAL MICROSCOPY; NANOSTRUCTURES; SPECTROSCOPY; ABSORPTION;

D O I：

10.1063/1.4913853

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We perform time-resolved pump-probe microscopy measurements by recording the local force between a sharp tip and the photo-excited sample as a readout mechanism for the material's nonlinear polarization. We show that the photo-induced force is sensitive to the same excited state dynamics as measured in an optical pump-probe experiment. Ultrafast pump-probe force microscopy constitutes a non-optical detection technique with nanoscale resolution that pushes pump-probe sensitivities close to the realm of single molecule studies. (C) 2015 AIP Publishing LLC.

引用

页数：4

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