Artifact free time resolved near-field spectroscopy

被引：40

作者：

Sternbach, A. J. ^{[1
,2
]}

Hinton, J. ^{[2
]}

Slusar, T. ^{[3
]}

Mcleod, A. S. ^{[1
]}

Liu, M. K. ^{[4
]}

Frenzel, A. ^{[2
]}

Wagner, M. ^{[2
]}

Iraheta, R. ^{[2
]}

Keilmann, F. ^{[5
,6
]}

Leitenstorfer, A. ^{[7
,8
]}

Fogler, M. ^{[2
]}

Kim, H. -T. ^{[3
]}

Averitt, R. D. ^{[2
]}

Basov, D. N. ^{[1
,2
]}

机构：

[1] Columbia Univ, Dept Phys, 116th St & Broadway, New York, NY 10027 USA

[2] Univ Calif San Diego, Dept Phys, 9500 Gilman Dr, San Diego, CA 92037 USA

[3] Elect & Telecommun Res Inst, IT Convergence & Components Lab, Daejeon 305350, South Korea

[4] SUNY Stony Brook, Dept Phys, Stony Brook, NY 11794 USA

[5] Ludwig Maximilians Univ Munchen, D-80539 Munich, Germany

[6] Ctr Nanosci, D-80539 Munich, Germany

[7] Univ Konstanz, Dept Phys, D-78457 Constance, Germany

[8] Univ Konstanz, Ctr Appl Photon, D-78457 Constance, Germany

来源：

OPTICS EXPRESS | 2017年 / 25卷 / 23期

关键词：

ULTRAFAST; PHASE; LIGHT; TRANSITION; DYNAMICS; POLARITONS; SCATTERING; MICROSCOPY; NANOSCOPY; PLASMONS;

D O I：

10.1364/OE.25.028589

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on the first implementation of ultrafast near field measurements carried out with the transient pseudoheterodyne detection method (Tr-pHD). This method is well suited for efficient and artifact free pump-probe scattering-type near-field optical microscopy with nanometer scale resolution. The Tr-pHD technique is critically compared to other data acquisition methods and found to offer significant advantages. Experimental evidence for the advantages of Tr-pHD is provided in the near-IR frequency range. Crucial factors involved in achieving proper performance of the Tr-pHD method with pulsed laser sources are analyzed and detailed in this work. We applied this novel method to femtosecond time-resolved and nanometer spatially resolved studies of the photo-induced effects in the insulator-to-metal transition system vanadium dioxide. (c) 2017 Optical Society of America

引用

页码：28589 / 28611

页数：23

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