Pump-probe scanning near field optical microscopy: Sub-wavelength resolution chemical imaging and ultrafast local dynamics

Khadga Karki; Mahesh Namboodiri; Tahir Zeb Khan; Arnulf Materny

doi:10.1063/1.3701724

Pump-probe scanning near field optical microscopy: Sub-wavelength resolution chemical imaging and ultrafast local dynamics

Khadga Karki, Mahesh Namboodiri, Tahir Zeb Khan, Arnulf Materny^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

Results of two color femtosecond time-resolved pump-probe experiments using scanning near field optical microscopy on thin films of organic semiconductor 3,4,9,10 perylenetetracarboxylic dianhydride are presented. With this technique, quantitative information on exciton dynamics with high temporal and spatial resolution can be obtained by fitting a rate model to the transient absorption spectra. Additionally, the chemical selectivity inherent to this technique enhances the contrast, which could be used for video-rate imaging when high-repetition rate lasers are used.

Original language	English
Article number	153103
Journal	Applied Physics Letters
Volume	100
Issue number	15
DOIs	https://doi.org/10.1063/1.3701724
State	Published - 9 Apr 2012
Externally published	Yes

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title = "Pump-probe scanning near field optical microscopy: Sub-wavelength resolution chemical imaging and ultrafast local dynamics",

abstract = "Results of two color femtosecond time-resolved pump-probe experiments using scanning near field optical microscopy on thin films of organic semiconductor 3,4,9,10 perylenetetracarboxylic dianhydride are presented. With this technique, quantitative information on exciton dynamics with high temporal and spatial resolution can be obtained by fitting a rate model to the transient absorption spectra. Additionally, the chemical selectivity inherent to this technique enhances the contrast, which could be used for video-rate imaging when high-repetition rate lasers are used.",

author = "Khadga Karki and Mahesh Namboodiri and Khan, {Tahir Zeb} and Arnulf Materny",

note = "Funding Information: Financial support from NanoFun-Center, Jacobs University Bremen and DFG (MA-17 Femto-opt.Nahfeld) is gratefully acknowledged. Authors thank Gesa Helms and Professor J{\"u}rgen Fritz for the high resolution AFM images of the thin films and Professor Veit Wagner for the help in preparing the thin films.",

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doi = "10.1063/1.3701724",

language = "英语",

volume = "100",

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T2 - Sub-wavelength resolution chemical imaging and ultrafast local dynamics

AU - Karki, Khadga

AU - Namboodiri, Mahesh

AU - Khan, Tahir Zeb

AU - Materny, Arnulf

N1 - Funding Information: Financial support from NanoFun-Center, Jacobs University Bremen and DFG (MA-17 Femto-opt.Nahfeld) is gratefully acknowledged. Authors thank Gesa Helms and Professor Jürgen Fritz for the high resolution AFM images of the thin films and Professor Veit Wagner for the help in preparing the thin films.

PY - 2012/4/9

Y1 - 2012/4/9

N2 - Results of two color femtosecond time-resolved pump-probe experiments using scanning near field optical microscopy on thin films of organic semiconductor 3,4,9,10 perylenetetracarboxylic dianhydride are presented. With this technique, quantitative information on exciton dynamics with high temporal and spatial resolution can be obtained by fitting a rate model to the transient absorption spectra. Additionally, the chemical selectivity inherent to this technique enhances the contrast, which could be used for video-rate imaging when high-repetition rate lasers are used.

AB - Results of two color femtosecond time-resolved pump-probe experiments using scanning near field optical microscopy on thin films of organic semiconductor 3,4,9,10 perylenetetracarboxylic dianhydride are presented. With this technique, quantitative information on exciton dynamics with high temporal and spatial resolution can be obtained by fitting a rate model to the transient absorption spectra. Additionally, the chemical selectivity inherent to this technique enhances the contrast, which could be used for video-rate imaging when high-repetition rate lasers are used.

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VL - 100

JO - Applied Physics Letters

JF - Applied Physics Letters

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ER -

Pump-probe scanning near field optical microscopy: Sub-wavelength resolution chemical imaging and ultrafast local dynamics

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