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Trapped rainbow techniques for spectroscopy on a chip and fluorescence enhancement

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Abstract

We report on the experimental demonstration of the broadband “trapped rainbow” in the visible range using arrays of adiabatically tapered optical nanowaveguides. Being a distinct case of the slow light phenomenon, the trapped rainbow effect could be applied to optical signal processing, sensing in such applications as spectroscopy on a chip, and to providing enhanced light-matter interactions. As an example of the latter applications, we have fabricated a large area array of tapered nanowaveguides, which exhibit broadband “trapped rainbow” effect. Considerable fluorescence enhancement due to slow light behavior in the array has been observed.

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  1. http://www.suss-microoptics.com.

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Acknowledgements

V. Smolyaninova acknowledges support of this research by the NSF grants DMR-0348939 and DMR-1104676; V. Shalaev and A. Kildishev acknowledge support by ARO-MURI award 50342-PH-MUR.

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Authors and Affiliations

  1. Department of Physics Astronomy and Geosciences, Towson University, 8000 York Rd., Towson, MD, 21252, USA

    V. N. Smolyaninova

  2. Department of Electrical and Computer Engineering, University of Maryland, College Park, MD, 20742, USA

    I. I. Smolyaninov

  3. Birck Nanotechnology Centre, School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, 47907, USA

    A. V. Kildishev & V. M. Shalaev

Authors
  1. V. N. Smolyaninova
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  2. I. I. Smolyaninov
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  3. A. V. Kildishev
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  4. V. M. Shalaev
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Correspondence to V. N. Smolyaninova.

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Smolyaninova, V.N., Smolyaninov, I.I., Kildishev, A.V. et al. Trapped rainbow techniques for spectroscopy on a chip and fluorescence enhancement. Appl. Phys. B 106, 577–581 (2012). https://doi.org/10.1007/s00340-011-4856-x

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  • DOI: https://doi.org/10.1007/s00340-011-4856-x

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