Reflection of a Beam of Finite Size from a Corrugated Waveguide

Avrutsky, Ivan; Sychugov, V A

doi:10.1080/09500348914551571

Cited by 163 publications

(57 citation statements)

References 4 publications

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“…This design consideration presents a considerable challenge. Peak reflectance is expected to decrease with an accompanying increase in spectral FWHM as the pixel lateral extent decreases [11][12][13][14][15][16] . On the other hand, smaller, arrayed RSG configurations are more easily integrated with existing sensing and detecting arrays.…”

Section: Measured Rsg Spectramentioning

confidence: 99%

Arrayed resonant subwavelength gratings : LDRD 38618 final report.

Grotbeck¹,

Kemme²,

Wendt³

et al. 2003

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This report describes a passive, optical component called resonant subwavelength gratings (RSGs), which can be employed as one element in an RSG array. An RSG functions as an extremely narrow wavelength and angular band reflector, or mode selector. Theoretical studies predict that the infinite, laterally-extended RSG can reflect 100% of the resonant light while transmitting the balance of the other wavelengths. Experimental realization of these remarkable predictions has been impacted primarily by fabrication challenges. Even so, we will present large area (1.0mm) RSG reflectivity as high as 100.2%, normalized to deposited gold.Broad use of the RSG will only truly occur in an accessible micro-optical system. This program at Sandia is a normal incidence array configuration of RSGs where each array element resonates with a distinct wavelength to act as a dense array of wavelength-and modeselective reflectors. Because of the array configuration, RSGs can be matched to an array of pixels, detectors, or chemical/biological cells for integrated optical sensing. Micro-optical system considerations impact the ideal, large area RSG performance by requiring finite extent devices and robust materials for the appropriate wavelength. Theoretical predictions and experimental measurements are presented that demonstrate the component response as a function of decreasing RSG aperture dimension and off-normal input angular incidence. 4 AcknowledgementSandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin

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Section: Measured Rsg Spectramentioning

confidence: 99%

Arrayed resonant subwavelength gratings : LDRD 38618 final report.

Grotbeck¹,

Kemme²,

Wendt³

et al. 2003

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“…Some evident spatial phenomena have been noticed long time ago: the guided mode brings light beyond the illuminated spot, which results in the reflected beam shifted and widened in the propagation direction of the waveguide mode [15]. Normal incidence, naturally, provides no shift because of simultaneous excitation of two oppositely directed guided modes.…”

Section: Spatial Filtering By Dielectric Waveguie Gratingsmentioning

confidence: 99%

Spectral and spatial filtering using waveguide grating mirror

Avrutsky

Rabady

Zinoviev

2002

Diffractive Optics and Micro-Optics

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“…Guided-mode (or equivalently, leaky-mode) resonance takes advantage of periodic dielectric grating structures to create versatile photonic spectra with associated surface-localized energy states [6][7][8][9][10]. These states enable narrow-line bandpass and bandstop filters, polarizers, reflectors, and polarization-independent elements [11].…”

Section: Introductionmentioning

confidence: 99%

Focusing Light with Curved Guided-Mode Resonance Reflectors

Zhai

Magnusson

2011

Micromachines

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Abstract:Employing numerical simulations, we investigate the possibility of using curved guided-mode resonance (GMR) elements to focus light in reflection. We treat GMR reflectors with a parabolic shape and show that they are capable of focusing light effectively across wavelength bands that extend several hundred nanometers. The spatially infinite reflector model is simulated with a finite-element method, whereas the spatially finite reflector is treated with a finite-difference-time-domain method. The numerical results demonstrate that light intensity at the focal point is 8.6 dB stronger than the incident intensity when the GMR reflector's size is on the order of 10 wavelengths. The results indicate potential applicability of wideband-focusing devices in electromagnetics and photonics using compact resonance elements.

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Reflection of a Beam of Finite Size from a Corrugated Waveguide

Cited by 163 publications

References 4 publications

Arrayed resonant subwavelength gratings : LDRD 38618 final report.

Arrayed resonant subwavelength gratings : LDRD 38618 final report.

Spectral and spatial filtering using waveguide grating mirror

Focusing Light with Curved Guided-Mode Resonance Reflectors

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