Resonant optical transmission from a one-dimensional relief metalized subwavelength grating

Nazarova, Dimana; Mednikarov, B.; Sharlandjiev, P.

doi:10.1364/ao.46.008250

Cited by 11 publications

(9 citation statements)

References 12 publications

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“…Grating-coupled SPR has been shown to produce enhanced optical transmission at specific wavelengths associated with a matching of the grating wavevector with that of SPPs at the metal/dielectric interface. , An example of this enhancement is shown in Figure , which depicts a series of p-polarized transmission spectra for light incident on a gold-coated grating as a function of angle of incidence. An enhanced transmission peak is evident at ∼750 nm for directly transmitted light (θ = 0°).…”

Section: Resultsmentioning

confidence: 99%

“…We, and others, have previously demonstrated that enhanced transmission peaks associated with grating-coupled surface plasmon resonance can be used to quantify the thickness of adsorbed thin films or changing dielectric media. ,,, In order to investigate the impact of thin, coated films on the various transmission features observed in Figure , we constructed multilayer films of arachidic acid. Langmuir–Blodgett film deposition was used in order to controllably fabricate films of varying thickness.…”

Section: Resultsmentioning

confidence: 99%

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Use of Dispersion Imaging for Grating-Coupled Surface Plasmon Resonance Sensing of Multilayer Langmuir–Blodgett Films

Yeh

Hillier

2013

Anal. Chem.

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We report grating-coupled surface plasmon resonance measurements involving the use of dispersion images to interpret the optical response of a metal-coated grating. Optical transmission through a grating coated with a thin, gold film exhibits features characteristic of the excitation of surface plasmon resonance due to coupling with the nanostructured grating surface. Evidence of numerous surface plasmon modes associated with coupling at both front (gold/air) and back (gold/substrate) grating interfaces is observed. The influence of wavelength and angle of incidence on plasmon coupling can be readily characterized via dispersion images, and the associated image features can be indexed to matching conditions associated with several diffracted orders at both the front and back of the grating. These features collapse onto a set of global dispersion curves when plotted as peak energy versus the grating wavevector, with feature locations clustered according to the refractive index values of the neighboring dielectric material, either air or polycarbonate. Coating of the grating with multilayer arachidic acid films via Langmuir-Blodgett deposition results in red-shifting of some, but not all, of the plasmon features. The magnitude of the shift is a function of the film thickness, wavelength, and angle of incidence. Dispersion images clearly depict the red-shifting and also broadening of the front side features with increasing film thickness. In contrast, little change is observed in features associated with the back-side of the grating. The nature and magnitude of the interaction between the plasmon modes appearing at the front and back sides of the grating are discussed and analyzed in terms of the predicted interactions determined via optical modeling calculations.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Use of Dispersion Imaging for Grating-Coupled Surface Plasmon Resonance Sensing of Multilayer Langmuir–Blodgett Films

Yeh

Hillier

2013

Anal. Chem.

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“…Normal incident light is mostly reflected by the metal grating, resulting in a narrow transmission band 20 . With the incident light illuminated on the periodic structure, diffraction occurs which formed the incident mode.…”

Section: Gmrf Designmentioning

confidence: 99%

“…Normal incident light is mostly reflected by the metal grating, resulting in a narrow transmission band. 20 With the incident light illuminated on the periodic structure, diffraction occurs which formed the incident mode. The inherent guided mode leaks out from the waveguide layer and interferes with the applied wave that results in a filtering response.…”

Section: Gmrf Designmentioning

confidence: 99%

Electrically tunable polarization‐independent visible transmission guided‐mode resonance filter based on polymer‐dispersed liquid crystals

Sun

Wang

2020

Micro & Optical Tech Letters

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A tunable polarization-independent narrowband guidedmode resonance filter (GMRF), consisting of a 2D subwavelength aluminum grating and a polymer-dispersed liquid crystal (PDLC) layer is demonstrated. By taking advantage of 2D structural phase matching, the guided mode resonance occurs under both transverse electric and magnetic guided modes, we obtained polarizationindependent bandpass filtering without loss of polarization, as verified via finite-difference time-domain simulations. Meanwhile, we use PDLC as a property adjustable material, when the orientation of the PDLC was controlled with an applied voltage, the transform mode of the incident light changed, which enabled easy refractive index tunability. A finite element method was used to design and characterize a tunable GMRF with a transmission resonance wavelength that can be shifted from 492.31 to 505.94 nm, based on the PDLC refraction. The relationship between resonance wavelength and the PDLC refractive index exhibits a linear curve, the shape and peak of the resonance transmission curve is stable during adjustments. With the design of this structure parameter, the GMRF transmission efficiency was over 82% in the visible band.

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“…We and others have previously demonstrated that a diffraction grating constructed from a commercial DVD supported SP-enhanced light transmission when coated with a thin metal film. , The observed enhanced transmission consists of narrow peaks in the visible spectrum, whose central wavelength can be tuned by simple rotation of the grating. In the work presented here, we describe a simple optical microscope-based method for monitoring the first-order diffracted peaks associated with enhanced transmission through a gold-coated diffraction grating.…”

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confidence: 91%

Diffraction-Based Tracking of Surface Plasmon Resonance Enhanced Transmission Through a Gold-Coated Grating

2011

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Surface plasmon resonance enhanced transmission through metal-coated nanostructures represents a highly sensitive yet simple method for quantitative measurement of surface processes and is particularly useful in the development of thin film and adsorption sensors. Diffraction-induced surface plasmon excitation can produce enhanced transmission at select regions of the visible spectrum, and wavelength shifts associated with these transmission peaks can be used to track adsorption processes and film formation. In this report, we describe a simple optical microscope-based method for monitoring the first-order diffracted peaks associated with enhanced transmission through a gold-coated diffraction grating. A Bertrand lens is used to focus the grating's diffraction image onto a CCD camera, and the spatial position of the diffracted peaks can be readily transformed into a spectral signature of the transmitted light without the use of a spectrometer. The surface plasmon peaks appear as a region of enhanced transmission when the sample is illuminated with p-polarized light, and the peak position reflects the local dielectric properties of the metal interface, including the presence of thin films. The ability to track the position of the plasmon peak and, thus, measure film thickness is demonstrated using the diffracted peaks for samples possessing thin films of silicon oxide. The experimental results are then compared with calculations of optical diffraction through a model, film-coated grating using the rigorously coupled wave analysis simulation method. C oupling of light with nanostructured objects leads to a variety of unique and potentially useful optical phenomena. 1 Some of the more interesting examples involve the coupling of light to nanostructured metal surfaces, which can lead to what is known as enhanced or extraordinary optical transmission. 2 The origins of enhanced transmission through metal films can be traced to the excitation of surface plasmons (SPs) in the nanostructured metal interface. 1b The high sensitivity of these SPs to the local dielectric conditions at the metal interface can be exploited in sensor development. 3 Examples of nanostructurebased plasmonic sensing include nanostructures consisting of nanohole arrays, 4 single nanometric holes, 5 nanoslit arrays, 6 and various grating-type and diffractive nanostructures. 7 A variety of fabrication strategies can be used to create nanostructured optical elements ranging from electron beam lithography to colloidal nanosphere lithography. 4a,8 Beyond these specialized methods, one can exploit the features of commercially available diffraction gratings as nanostructured elements. Indeed, optical sensors and SP-based sensing platforms that exploit gratings have become increasingly popular. 9 Gratings represent an inherently informationrich substrate due to SPs appearing not only in the directly reflected and transmitted peaks, but also in the various diffracted orders. 10 In addition, the SP response is highly tunable on the basis of the si...

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Resonant optical transmission from a one-dimensional relief metalized subwavelength grating

Cited by 11 publications

References 12 publications

Use of Dispersion Imaging for Grating-Coupled Surface Plasmon Resonance Sensing of Multilayer Langmuir–Blodgett Films

Use of Dispersion Imaging for Grating-Coupled Surface Plasmon Resonance Sensing of Multilayer Langmuir–Blodgett Films

Electrically tunable polarization‐independent visible transmission guided‐mode resonance filter based on polymer‐dispersed liquid crystals

Diffraction-Based Tracking of Surface Plasmon Resonance Enhanced Transmission Through a Gold-Coated Grating

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