Abstract

We study the amplitude and phase signals detected in infrared scattering-type near field optical microscopy (s-SNOM) when probing a thin sample layer on a substrate. We theoretically describe this situation by solving the electromagnetic scattering of a dipole near a planar sample consisting of a substrate covered by thin layers. We perform calculations to describe the effect of both weakly (Si and SiO2) and strongly (Au) reflecting substrates on the spectral s-SNOM signal of a thin PMMA layer. We theoretically predict, and experimentally confirm an enhancement effect in the polymer vibrational spectrum when placed on strongly reflecting substrates. We also calculate the scattered fields for a resonant tip-substrate interaction, obtaining a dramatic enhancement of the signal amplitude and spectroscopic contrast of the sample layer, together with a change of the spectral line shape. The enhanced contrast opens the possibility to perform ultra-sensitive near field infrared spectroscopy of monolayers and biomolecules.

© 2008 Optical Society of America

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2007 (8)

I. Kopf, J. S. Samson, G. Wollny, C. Grunwald, E. Brundermann, and M. Havenith, "Chemical imaging of microstructured self-assembled monolayers with nanometer resolution," J. Phys. Chem. C 111,8166-8171 (2007).
[CrossRef]

A. Huber, D. Kazantsev, F. Keilmann, J. Wittborn, and R. Hillenbrand, "Simultaneous infrared material recognition and conductivity mapping by nanoscale near-field microscopy," Adv. Mater. 19,2209-2212 (2007).
[CrossRef]

A. Cvitkovic, N. Ocelic, and R. Hillenbrand, "Material-specific optical recognition of sub-10 nm particles by substrate-enhanced scattering-type near-field microscopy," Nano Lett. 7,3177-3181 (2007).
[CrossRef]

R. Esteban, R. Vogelgesang, and K. Kern, "Tip-substrate interaction in optical near-field microscopy," Phys. Rev. B 75,195410 (2007).
[CrossRef]

V. Romanov, and G. C. Walker, "Infrared near-field detection of a narrow resonance due to molecular vibrations in a nanoparticle," Langmuir 23,2829-2837 (2007).
[CrossRef]

F. J. García de Abajo, "Light scattering by particle and hole arrays," Rev. Mod. Phys. 79,1267-1290 (2007).
[CrossRef]

K.R. Rodriguez, H. Tian, J.M. Heer, S. Teeters-Kennedy, and J.V. Coe, "Interaction of an infrared surface plasmon with an excited molecular vibration," J. Chem. Phys. 126,151101 (2007).
[CrossRef]

H. Wang, J. Kundu, and N. J. Halas, "Plasmonic Nanoshell Arrays Combine Surface-Enhanced Vibrational Spectroscopies on a Single Substrate," Angew. Chem. 46,9040-9044 (2007).

2006 (11)

F. Neubrech, T. Kolb, R. Lovrincic, G. Fahsold, A. Pucci, J. Aizpurua, T. W. Cornelius, M. E. Toimil-Molares, R. Neumann, and S. Karim, "Resonances of individual metal nanowires in the infrared," Appl. Phys. Lett. 89,253104 (2006).
[CrossRef]

N. Ocelic, A. Huber, and R. Hillenbrand, "Pseudoheterodyne detection for background-free near-field spectroscopy," App. Phys. Lett. 89,101124 (2006).
[CrossRef]

N. Anderson, P. Anger, A. Hartschuh, and L. Novotny, "Subsurface Raman imaging with nanoscale resolution," Nano Lett. 6,744-749 (2006).
[CrossRef]

G. Y. Panasyuk, V. A. Markel, P. S. Carney, and J. C. Schotland, "Nonlinear inverse scattering and threedimensional near-field optical imaging," Appl. Phys. Lett. 89,221116 (2006).
[CrossRef]

R. Esteban, R. Vogelgesang, and K. Kern, "Simulation of optical near and far fields of dielectric apertureless scanning probe," Nanotechnology 17,475-482 (2006).
[CrossRef]

M. Brehm, T. Taubner, R. Hillenbrand, and F. Keilmann, "Infrared Spectroscopic Mapping of Single Nanoparticles and Viruses at Nanoscale Resolution," Nanoletters 6,1307-1310 (2006).

T. Taubner, D. Korobkin, Y. Urzhumov, G. Shvets, and R. Hillenbrand, "Near-field Microscopy Through a SiC Superlens," Science 313,1595-1595 (2006).
[CrossRef]

A. Cvitkovic, N. Ocelic, J. Aizpurua, R. Guckenberger, and R. Hillenbrand, "Infrared Imaging of Single Nanoparticles via Strong Field Enhancement in a Scanning Nanogap," Phys. Rev. Lett. 97,060801 (2006).
[CrossRef]

N. Anderson, A. Bouhelier, and L. Novotny, "Near-field photonics: tip-enhanced microscopy and spectroscopy on the nanoscale," J. Opt. A 8,S227-S233 (2006).

Z. H. Kim, and S. R. Leone, "High-resolution apertureless near-field optical imaging using gold nanosphere probes," J. Phys. Chem. B 110,19804-19809 (2006)
[CrossRef]

R. M. Roth, N. C. Panoiu, M. M. Adams, R. M. Osgood, C. C. Neacsu, and M. B. Raschke, "Resonant-plasmon field enhancement from asymmetrically illuminated conical metallic-probe tips," Opt. Express 14,2921-2931 (2006).
[CrossRef]

2005 (3)

T. Taubner, F. Keilmann, and R. Hillenbrand, "Nanoscale-resolved subsurface imaging by scattering-type near-field optical microscopy," Opt. Express 13,8893-8899 (2005).
[CrossRef]

M.B. Raschke, L. Molina, T. Elsaesser, D.H. Kim,W. Knoll, and K. Hinrichs, "Apertureless near-field vibrational imaging of block-copolymer nanostructures with ultrahigh spatial resolution," ChemPhysChem 6, 2197-2203 (2005).
[CrossRef]

S. G. Moiseev, and S. V. Sukhov, "Near-Field optical microscopy in the presence of an intermediate layer," Opt. Spectrosc. 98,308-313 (2005).
[CrossRef]

2004 (4)

T. Taubner, R. Hillenbrand, and F. Keilmann, "Nanoscale polymer identification by spectral signature in scattering infrared near-field microscopy," Appl. Phys. Lett. 85,5064-5066 (2004).
[CrossRef]

F. Keilmann, and R. Hillenbrand, "Near-field optical microscopy by elastic light scattering from a tip," Phil. Trans. Roy. Soc. A 362, 787-805 (2004).

T. Taubner, F. Keilmann, and R. Hillenbrand, "Nanomechanical resonance tuning and phase effects in optical near-field interaction," Nano Lett. 4,1669-1672 (2004).
[CrossRef]

R. Bachelot, G. Lerondel, S. Blaize, S. Aubert, A. Bruyant, P. Royer, "Probing photonic and optoelectronic structures by apertureless scanning near-field optical microscopy," Microsc. Res. Tech. 64,441-452 (2004).
[CrossRef]

2003 (4)

M. B. Raschke and C. Lienau, "Apertureless near-field optical microscopy: Tip-sample coupling in elastic light scattering," Appl. Phys. Lett. 83,5089-5091 (2003).
[CrossRef]

T. Taubner, R. Hillenbrand, and F. Keilmann, "Performance of visible and mid-infrared scattering-type near-field optical microscopes," J. Microsc. 210,311-314 (2003).
[CrossRef]

J. A. Porto, P. Johansson, S. P. Apell, and T. Lopez-Rios, "Resonance shift effects in apertureless scanning near-field optical microscopy," Phys. Rev. B. 67, 085409 (2003).
[CrossRef]

M.S. Anderson, "Enhanced infrared absorption with dielectric nanoparticles," Appl. Phys. Lett. 83,2964-2966 (2003).
[CrossRef]

2002 (3)

B.B. Akhremitchev, Y.J. Sun, L. Stebounova, and G.C. Walker, "Monolayer-sensitive infrared imaging of DNA stripes using apertureless near-field microscopy," Langmuir 18,5325-5328 (2002).
[CrossRef]

E.G. Bortchagovsky, and U. C. Fischer, "On the modulation of optical transmission spectra of thin dye layers by a supporting medium," J. Chem. Phys. 117,5384-5392 (2002).
[CrossRef]

R. Hillenbrand, T. Taubner, and F. Keilmann, "Phonon-enhanced light-matter interaction at the nanometer scale," Nature 418,159-162 (2002).
[CrossRef]

2001 (1)

B. B. Akhremitchev, and G. C. Walker, "Apertureless Scanning Near-Field Infrared Microscopy of Rough Polymeric Surface," Langmuir. 17,2774-2781 (2001).
[CrossRef]

2000 (2)

T. R. Jensen, M. D. Malinsky, C. L. Haynes, and R. P. Van Duyne, "Nanosphere lithography: Tunable Localised Surface Plasmon Resonance Spectra of Silver Nanoparticles," J. Phys. Chem. B 104,10549-10556 (2000).
[CrossRef]

R. Hillenbrand, and F. Keilmann, "Complex optical constants on a subwavelength scale," Phys. Rev. Lett. 85,3029-3032 (2000).
[CrossRef]

1999 (2)

A. V. Zayats, "Electromagnetic field enhancement in the context of apertureless near-field microscopy," Opt. Comm. 161,156-162 (1999).

B. Knoll, and F. Keilmann, "Near-field probing of vibrational absorption for chemical microscopy," Nature 399,134-137 (1999).
[CrossRef]

1995 (2)

F. Zenhausern, Y. Martin, and H. K. Wickramasinghe, "Scanning Interferometric Apertureless Microscopy: Optical Imaging at 10 Angstrom Resolution," Science 269,1083-1085 (1995).
[CrossRef]

A. Lahrech, R. Bachelot, P. Gleyzes, and A. C. Boccara, "Infrared-reflection-mode near-field microscopy using an apertureless probe with a resolution of lambda / 600," Opt. Lett. 21,1315-1317 (1995).

1994 (1)

1984 (1)

G. W. Ford and W. H. Weber, "Electromagnetic interactions of molecules with metal surfaces," Phys. Rep. 113,195-287 (1984).
[CrossRef]

1961 (1)

U. Fano, "Effects of Configuration Interaction on Intensities and Phase Shifts," Phys. Rev. B 124,1866-1878 (1961).

1919 (1)

H. Weyl, "Ausbreitung elektromagnetischer Wellen uber einem ebenen Leiter," Ann. Phys. (Leipzig) 60,481-500 (1919).

Adv. Mater. (1)

A. Huber, D. Kazantsev, F. Keilmann, J. Wittborn, and R. Hillenbrand, "Simultaneous infrared material recognition and conductivity mapping by nanoscale near-field microscopy," Adv. Mater. 19,2209-2212 (2007).
[CrossRef]

Angew. Chem. (1)

H. Wang, J. Kundu, and N. J. Halas, "Plasmonic Nanoshell Arrays Combine Surface-Enhanced Vibrational Spectroscopies on a Single Substrate," Angew. Chem. 46,9040-9044 (2007).

Ann. Phys. (Leipzig) (1)

H. Weyl, "Ausbreitung elektromagnetischer Wellen uber einem ebenen Leiter," Ann. Phys. (Leipzig) 60,481-500 (1919).

App. Phys. Lett. (1)

N. Ocelic, A. Huber, and R. Hillenbrand, "Pseudoheterodyne detection for background-free near-field spectroscopy," App. Phys. Lett. 89,101124 (2006).
[CrossRef]

Appl. Phys. Lett. (5)

F. Neubrech, T. Kolb, R. Lovrincic, G. Fahsold, A. Pucci, J. Aizpurua, T. W. Cornelius, M. E. Toimil-Molares, R. Neumann, and S. Karim, "Resonances of individual metal nanowires in the infrared," Appl. Phys. Lett. 89,253104 (2006).
[CrossRef]

M. B. Raschke and C. Lienau, "Apertureless near-field optical microscopy: Tip-sample coupling in elastic light scattering," Appl. Phys. Lett. 83,5089-5091 (2003).
[CrossRef]

G. Y. Panasyuk, V. A. Markel, P. S. Carney, and J. C. Schotland, "Nonlinear inverse scattering and threedimensional near-field optical imaging," Appl. Phys. Lett. 89,221116 (2006).
[CrossRef]

T. Taubner, R. Hillenbrand, and F. Keilmann, "Nanoscale polymer identification by spectral signature in scattering infrared near-field microscopy," Appl. Phys. Lett. 85,5064-5066 (2004).
[CrossRef]

M.S. Anderson, "Enhanced infrared absorption with dielectric nanoparticles," Appl. Phys. Lett. 83,2964-2966 (2003).
[CrossRef]

ChemPhysChem (1)

M.B. Raschke, L. Molina, T. Elsaesser, D.H. Kim,W. Knoll, and K. Hinrichs, "Apertureless near-field vibrational imaging of block-copolymer nanostructures with ultrahigh spatial resolution," ChemPhysChem 6, 2197-2203 (2005).
[CrossRef]

J. Chem. Phys. (2)

E.G. Bortchagovsky, and U. C. Fischer, "On the modulation of optical transmission spectra of thin dye layers by a supporting medium," J. Chem. Phys. 117,5384-5392 (2002).
[CrossRef]

K.R. Rodriguez, H. Tian, J.M. Heer, S. Teeters-Kennedy, and J.V. Coe, "Interaction of an infrared surface plasmon with an excited molecular vibration," J. Chem. Phys. 126,151101 (2007).
[CrossRef]

J. Microsc. (1)

T. Taubner, R. Hillenbrand, and F. Keilmann, "Performance of visible and mid-infrared scattering-type near-field optical microscopes," J. Microsc. 210,311-314 (2003).
[CrossRef]

J. Opt. A (1)

N. Anderson, A. Bouhelier, and L. Novotny, "Near-field photonics: tip-enhanced microscopy and spectroscopy on the nanoscale," J. Opt. A 8,S227-S233 (2006).

J. Phys. Chem. B (2)

Z. H. Kim, and S. R. Leone, "High-resolution apertureless near-field optical imaging using gold nanosphere probes," J. Phys. Chem. B 110,19804-19809 (2006)
[CrossRef]

T. R. Jensen, M. D. Malinsky, C. L. Haynes, and R. P. Van Duyne, "Nanosphere lithography: Tunable Localised Surface Plasmon Resonance Spectra of Silver Nanoparticles," J. Phys. Chem. B 104,10549-10556 (2000).
[CrossRef]

J. Phys. Chem. C (1)

I. Kopf, J. S. Samson, G. Wollny, C. Grunwald, E. Brundermann, and M. Havenith, "Chemical imaging of microstructured self-assembled monolayers with nanometer resolution," J. Phys. Chem. C 111,8166-8171 (2007).
[CrossRef]

Langmuir (2)

V. Romanov, and G. C. Walker, "Infrared near-field detection of a narrow resonance due to molecular vibrations in a nanoparticle," Langmuir 23,2829-2837 (2007).
[CrossRef]

B.B. Akhremitchev, Y.J. Sun, L. Stebounova, and G.C. Walker, "Monolayer-sensitive infrared imaging of DNA stripes using apertureless near-field microscopy," Langmuir 18,5325-5328 (2002).
[CrossRef]

Langmuir. (1)

B. B. Akhremitchev, and G. C. Walker, "Apertureless Scanning Near-Field Infrared Microscopy of Rough Polymeric Surface," Langmuir. 17,2774-2781 (2001).
[CrossRef]

Microsc. Res. Tech. (1)

R. Bachelot, G. Lerondel, S. Blaize, S. Aubert, A. Bruyant, P. Royer, "Probing photonic and optoelectronic structures by apertureless scanning near-field optical microscopy," Microsc. Res. Tech. 64,441-452 (2004).
[CrossRef]

Nano Lett. (3)

A. Cvitkovic, N. Ocelic, and R. Hillenbrand, "Material-specific optical recognition of sub-10 nm particles by substrate-enhanced scattering-type near-field microscopy," Nano Lett. 7,3177-3181 (2007).
[CrossRef]

N. Anderson, P. Anger, A. Hartschuh, and L. Novotny, "Subsurface Raman imaging with nanoscale resolution," Nano Lett. 6,744-749 (2006).
[CrossRef]

T. Taubner, F. Keilmann, and R. Hillenbrand, "Nanomechanical resonance tuning and phase effects in optical near-field interaction," Nano Lett. 4,1669-1672 (2004).
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Nanoletters (1)

M. Brehm, T. Taubner, R. Hillenbrand, and F. Keilmann, "Infrared Spectroscopic Mapping of Single Nanoparticles and Viruses at Nanoscale Resolution," Nanoletters 6,1307-1310 (2006).

Nanotechnology (1)

R. Esteban, R. Vogelgesang, and K. Kern, "Simulation of optical near and far fields of dielectric apertureless scanning probe," Nanotechnology 17,475-482 (2006).
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F. Keilmann, and R. Hillenbrand, "Near-field optical microscopy by elastic light scattering from a tip," Phil. Trans. Roy. Soc. A 362, 787-805 (2004).

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