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  • Received: Aug. 20, 2019

    Accepted: Nov. 16, 2019

    Posted: Nov. 19, 2019

    Published Online: Dec. 18, 2019

    The Author Email: O. V. Borovkova (o.borovkova@rqc.ru)

    DOI: 10.1364/PRJ.8.000057

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    O. V. Borovkova, D. O. Ignatyeva, S. K. Sekatskii, A. Karabchevsky, V. I. Belotelov. High-Q surface electromagnetic wave resonance excitation in magnetophotonic crystals for supersensitive detection of weak light absorption in the near-infrared[J]. Photonics Research, 2020, 8(1): 01000057

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Photonics Research, Vol. 8, Issue 1, 01000057 (2020)

High-Q surface electromagnetic wave resonance excitation in magnetophotonic crystals for supersensitive detection of weak light absorption in the near-infrared

O. V. Borovkova1,*, D. O. Ignatyeva1,2, S. K. Sekatskii3, A. Karabchevsky4,5, and V. I. Belotelov1,2

Author Affiliations

  • 1Russian Quantum Center, Skolkovo, Moscow 143025, Russia
  • 2Lomonosov Moscow State University, Moscow 119991, Russia
  • 3Laboratoire de Physique de la Matière Vivante, IPHYS, EPFL, 1015 Lausanne, Switzerland
  • 4School of Electrical and Computer Engineering, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
  • 5e-mail: alinak@bgu.ac.il

Abstract

The mid-infrared spectrum can be recorded from almost any material, making mid-infrared spectroscopy an extremely important and widely used sample characterization and analysis technique. However, sensitive photoconductive detectors operate primarily in the near-infrared (NIR), but not in the mid-infrared, making the NIR more favorable for accurate spectral analysis. Although the absorption cross section of vibrational modes in the NIR is orders of magnitude smaller compared to the fundamental vibrations in the mid-infrared, different concepts have been proposed to increase the detectability of weak molecular transitions overtones. Yet, the contribution of magnetophotonic structures in the NIR absorption effect has never been explored so far. Here we propose high-Q magnetophotonic structures for a supersensitive detection of weak absorption resonances in the NIR. We analyze the contributions of both magnetic and nonmagnetic photonic crystal configurations to the detection of weak molecular transitions overtones. Our results constitute an important step towards the development of highly sensitive spectroscopic tools based on high-Q magnetophotonic sensors.

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