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Title: Supercontinuum spatial modulation spectroscopy: Detection and noise limitations

Abstract

Supercontinuum spatial modulation spectroscopy is a facile tool for conducting single molecule/particle extinction spectroscopy throughout the visible and near infrared (420–1100 nm). The technique's capabilities are benchmarked using individual Au nanoparticles (NPs) as a standard since they are well studied and display a prominent plasmon resonance in the visible. Extinction spectra of individual Au NPs with diameters (d) ranging from d ∼ 8 to 40 nm are resolved with extinction cross sections (σ{sub ext}) of σ{sub ext} ∼1 × 10{sup −13}–1 ×10{sup −11} cm{sup 2}. Corresponding signal-to-noise ratios range from ∼30 to ∼1400. The technique's limit of detection is determined to be 4.3 × 10{sup −14} cm{sup 2} (4.3 nm{sup 2}). To showcase supercontinuum spatial modulation spectroscopy's broader applicability, extinction spectra are acquired for other model systems, such as individual single-walled carbon nanotubes (SWCNTs) and CdSe nanowires. We show for the first time extinction spectra of individual (8,3) and (6,5) SWCNTs. For both chiralities, their E{sub 11} [(8,3) 1.30 eV (952 nm); (6,5) 1.26 eV (986 nm)] and E{sub 22} [(8,3) 1.86 eV (667 nm); (6,5) 2.19 eV (567 nm)] excitonic resonances are seen with corresponding cross sections of σ{sub ext} ∼ 10{sup −13} cm{sup 2} μm{sup −1}.

Authors:
; ;  [1]
  1. Department of Physics, Taras Shevchenko National University of Kiev, Kiev 01601 (Ukraine)
Publication Date:
OSTI Identifier:
22251453
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 84; Journal Issue: 11; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; BENCHMARKS; CADMIUM SELENIDES; CARBON NANOTUBES; CHIRALITY; CROSS SECTIONS; DETECTION; EV RANGE 01-10; MODULATION; QUANTUM WIRES; SIGNAL-TO-NOISE RATIO; SPECTRA; SPECTROSCOPY

Citation Formats

McDonald, M. P., Vietmeyer, F., Kuno, M., E-mail: mkuno@nd.edu, and Aleksiuk, D. Supercontinuum spatial modulation spectroscopy: Detection and noise limitations. United States: N. p., 2013. Web. doi:10.1063/1.4829656.
McDonald, M. P., Vietmeyer, F., Kuno, M., E-mail: mkuno@nd.edu, & Aleksiuk, D. Supercontinuum spatial modulation spectroscopy: Detection and noise limitations. United States. https://doi.org/10.1063/1.4829656
McDonald, M. P., Vietmeyer, F., Kuno, M., E-mail: mkuno@nd.edu, and Aleksiuk, D. 2013. "Supercontinuum spatial modulation spectroscopy: Detection and noise limitations". United States. https://doi.org/10.1063/1.4829656.
@article{osti_22251453,
title = {Supercontinuum spatial modulation spectroscopy: Detection and noise limitations},
author = {McDonald, M. P. and Vietmeyer, F. and Kuno, M., E-mail: mkuno@nd.edu and Aleksiuk, D.},
abstractNote = {Supercontinuum spatial modulation spectroscopy is a facile tool for conducting single molecule/particle extinction spectroscopy throughout the visible and near infrared (420–1100 nm). The technique's capabilities are benchmarked using individual Au nanoparticles (NPs) as a standard since they are well studied and display a prominent plasmon resonance in the visible. Extinction spectra of individual Au NPs with diameters (d) ranging from d ∼ 8 to 40 nm are resolved with extinction cross sections (σ{sub ext}) of σ{sub ext} ∼1 × 10{sup −13}–1 ×10{sup −11} cm{sup 2}. Corresponding signal-to-noise ratios range from ∼30 to ∼1400. The technique's limit of detection is determined to be 4.3 × 10{sup −14} cm{sup 2} (4.3 nm{sup 2}). To showcase supercontinuum spatial modulation spectroscopy's broader applicability, extinction spectra are acquired for other model systems, such as individual single-walled carbon nanotubes (SWCNTs) and CdSe nanowires. We show for the first time extinction spectra of individual (8,3) and (6,5) SWCNTs. For both chiralities, their E{sub 11} [(8,3) 1.30 eV (952 nm); (6,5) 1.26 eV (986 nm)] and E{sub 22} [(8,3) 1.86 eV (667 nm); (6,5) 2.19 eV (567 nm)] excitonic resonances are seen with corresponding cross sections of σ{sub ext} ∼ 10{sup −13} cm{sup 2} μm{sup −1}.},
doi = {10.1063/1.4829656},
url = {https://www.osti.gov/biblio/22251453}, journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 11,
volume = 84,
place = {United States},
year = {Fri Nov 15 00:00:00 EST 2013},
month = {Fri Nov 15 00:00:00 EST 2013}
}