Plasmonic-Enhanced Radiative Transfer Through Nanoscale Aperture Antennas

Nanoscale ridge aperture antenna as a nanoscale high transmission optical device is demonstrated. High transfer efficiency and confined radiation are achieved simultaneously in the near field compared with regularly-shaped apertures. The radiation enhancement is attributed to the fundamental electromagnetic field propagating in the TE10 mode concentrated in the gap between the ridges. The transfer efficiency is further enhanced through plasmon excitation and resonance. This paper reports spectroscopic measurements of radiative transfer through bowtie shape ridge aperture antennas. Resonance in these aperture antennas and its relation with the aperture geometry are investigated. The near-field radiation through the bowtie aperture and the regular nanoaperture is also mapped with near-field scanning optical microscopy. It is revealed that plasmon excitation and resonance contribute to the radiation enhancement through the ridge aperture antennas.

Near-field scanning optical microscopy local luminescence studies of rhodamine dye

Open Physics ◽

10.2478/s11534-009-0109-6 ◽

2010 ◽

Vol 8 (3) ◽

Cited By ~ 1

Author(s):

Petr Klapetek ◽

Juraj Bujdák ◽

Jiří Buršík

Keyword(s):

Time Domain ◽

Near Field ◽

Optical Microscope ◽

Far Field ◽

Luminescence Signal ◽

Local Topography ◽

Field Radiation ◽

Rhodamine Dye ◽

AbstractThis article presents results of near-field scanning optical microscope measurement of local luminescence of rhodamine 3B intercalated in montmorillonite samples. We focus on how local topography affects both the excitation and luminescence signals and resulting optical artifacts. The Finite Difference in Time Domain method (FDTD) is used to model the electromagnetic field distribution of the full tip-sample geometry including far-field radiation. Even complex problems like localized luminescence can be simulated computationally using FDTD and these simulations can be used to separate the luminescence signal from topographic artifacts.

Obtaining Subwavelength Optical Spots Using Nanoscale Ridge Apertures

Journal of Heat Transfer ◽

10.1115/1.2401196 ◽

2006 ◽

Vol 129 (1) ◽

pp. 37-43 ◽

Cited By ~ 10

Author(s):

E. X. Jin ◽

X. Xu

Keyword(s):

Light Transmission ◽

Incident Light ◽

Near Field ◽

Optical Resolution ◽

Maximum Size ◽

Materials Processing ◽

Enhanced Transmission ◽

Field Radiation ◽

Concentrating light into a nanometer domain is needed for optically based materials processing at the nanoscale. Conventional nanometer-sized apertures suffer from low light transmission, therefore poor near-field radiation. It has been suggested that ridge apertures in various shapes can provide enhanced transmission while maintaining the subwavelength optical resolution. In this work, the near-field radiation from an H-shaped ridge nanoaperture fabricated in an aluminum thin film is experimentally characterized using near-field scanning optical microscopy. With the incident light polarized along the direction across the gap in the H aperture, the H aperture is capable of providing an optical spot of about 106nm by 80nm in full-width half-maximum size, which is comparable to its gap size and substantially smaller than those obtained from the square and rectangular apertures of the same opening area. Finite different time domain simulations are used to explain the experimental results. Variations between the spot sizes obtained from a 3×3 array of H apertures are about 4–6%. The consistency and reliability of the near-field radiation from the H apertures show their potential as an efficient near-field light source for materials processing at the nanoscale.

Near-field scanning optical microscopy

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100144644 ◽

1986 ◽

Vol 44 ◽

pp. 642-643

Author(s):

E. Betzig ◽

A. Harootunian ◽

M. Isaacson ◽

A. Lewis

Keyword(s):

Near Field ◽

Optical Microscope ◽

Visible Radiation ◽

Field Methods ◽

Optical Elements ◽

Optical Region ◽

Order Of Magnitude ◽

Nondestructive Imaging ◽

In general, conventional methods of optical imaging are limited in spatial resolution by either the wavelength of the radiation used or by the aberrations of the optical elements. This is true whether one uses a scanning probe or a fixed beam method. The reason for the wavelength limit of resolution is due to the far field methods of producing or detecting the radiation. If one resorts to restricting our probes to the near field optical region, then the possibility exists of obtaining spatial resolutions more than an order of magnitude smaller than the optical wavelength of the radiation used. In this paper, we will describe the principles underlying such "near field" imaging and present some preliminary results from a near field scanning optical microscope (NS0M) that uses visible radiation and is capable of resolutions comparable to an SEM. The advantage of such a technique is the possibility of completely nondestructive imaging in air at spatial resolutions of about 50nm.

Nanometer-scale imaging of domains in ferroelectric thin films using apertureless near-field scanning optical microscopy

Applied Physics Letters ◽

10.1063/1.122727 ◽

1998 ◽

Vol 73 (22) ◽

pp. 3229-3231 ◽

Cited By ~ 39

Author(s):

Charles Hubert ◽

Jeremy Levy

Keyword(s):

Thin Films ◽

Optical Microscopy ◽

Near Field ◽

Ferroelectric Thin Films ◽

Nanometer Scale ◽

Raman imaging with near‐field scanning optical microscopy

Applied Physics Letters ◽

10.1063/1.114615 ◽

1995 ◽

Vol 67 (17) ◽

pp. 2483-2485 ◽

Cited By ~ 106

Author(s):

C. L. Jahncke ◽

M. A. Paesler ◽

H. D. Hallen

Keyword(s):

Optical Microscopy ◽

Near Field ◽

Raman Imaging ◽

Investigations of liquid crystals and liquid ambients using near-field scanning optical microscopy

Ultramicroscopy ◽

10.1016/0304-3991(95)00133-6 ◽

1995 ◽

Vol 61 (1-4) ◽

pp. 291-294 ◽

Cited By ~ 3

Author(s):

Patrick J. Moyer ◽

Stefan Kämmer ◽

Karsten Walzer ◽

Michael Hietschold

Keyword(s):

Liquid Crystals ◽

Optical Microscopy ◽

Near Field ◽

Layer composition and mode structure analysis of heterojunction laser diodes by near field scanning optical microscopy

1995 53rd Annual Device Research Conference Digest ◽

10.1109/drc.1995.496306 ◽

2002 ◽

Author(s):

M.S. Unlu ◽

B.B. Goldberg ◽

W.D. Herzog ◽

H.F. Ghaemi ◽

E. Towe

Keyword(s):

Optical Microscopy ◽

Structure Analysis ◽

Near Field ◽

Laser Diodes ◽

Mode Structure ◽

Near Field Scanning ◽

Layer Composition

Microscopic Investigation of Degradation Processes in a Polyfluorene Blend by Near-Field Scanning Optical Microscopy

Macromolecules ◽

10.1021/acs.macromol.6b01543 ◽

2016 ◽

Vol 49 (17) ◽

pp. 6439-6444 ◽

Cited By ~ 4

Author(s):

Shiran Nabha-Barnea ◽

Nitzan Maman ◽

Iris Visoly-Fisher ◽

Rafi Shikler

Keyword(s):

Optical Microscopy ◽

Near Field ◽

Microscopic Investigation ◽

Degradation Processes ◽

Near-Field Magneto-Photoluminescence of Singe Self-Organized Quantum Dots.

MRS Proceedings ◽

10.1557/proc-794-t6.8/n8.8/z6.8 ◽

2003 ◽

Vol 794 ◽

Author(s):

A. M. Mintairov ◽

A. S. Vlasov ◽

J. L. Merz

Keyword(s):

Quantum Dots ◽

Near Field ◽

Energy Shift ◽

Zeeman Splitting ◽

Negative Energy ◽

Zero Magnetic Field ◽

Bimodal Size Distribution ◽

Self Organized ◽

ABSTRACTWe present results obtained using low temperature near-field scanning optical microscopy for the measurements of Zeeman splitting and the diamagnetic shift of single self-organized InAs/AlAs, InAs/GaAs and InP/GaInP quantum dots. The measurements allow us to relate the bimodal size distribution of InAs dots with variations in In content. For single InP QDs we observed a strong circular polarization at zero magnetic field accompanied with a negative energy shift, suggesting that strong internal magnetic fields exist in these QDs.