Integrated 2D photonic crystal stack filter fabricated using nanoreplica molding

Yang, Fuchyi; Yen, Gary; Cunningham, Brian T.

doi:10.1364/oe.18.011846

Cited by 9 publications

(3 citation statements)

References 28 publications

(33 reference statements)

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“…The PCs were initially profiled for surface characteristics by atomic force microscopy (Dimension 3000, Digital Instruments) to compare the actual dimensions with the PC design. The PCs were then optically characterized by passing broadband light in the visible spectrum from a tungsten halogen lamp (Ocean Optics) through a polarizer and collimator before transmission through the device, which was aligned on a rotational stage to be perpendicular to the direction of incident light . PCs were illuminated with both transverse magnetic (incident electric field perpendicular to grating lines) and transverse electric (incident electric field parallel to grating lines) polarizations to characterize the two distinct resonances.…”

Section: Methodsmentioning

confidence: 99%

Improved Sensitivity of DNA Microarrays Using Photonic Crystal Enhanced Fluorescence

Mathias

Jones

et al. 2010

Anal. Chem.

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DNA microarrays are used to profile changes in gene expression between samples in a high-throughput manner, but measurements of genes with low expression levels can be problematic with standard microarray substrates. In this work, we expand the detection capabilities of a standard microarray experiment using a photonic crystal (PC) surface that enhances fluorescence observed from microarray spots. This PC is inexpensively and uniformly fabricated using a nanoreplica molding technique, with very little variation in its optical properties within- and between-devices. By using standard protocols to process glass microarray substrates in parallel with PCs, we evaluated the impact of this substrate on a one-color microarray experiment comparing gene expression in two developmental stages of Glycine max. The PCs enhanced the signal-to-noise ratio observed from microarray spots by 1 order of magnitude, significantly increasing the number of genes detected above substrate fluorescence noise. PC substrates more than double the number of genes classified as differentially expressed, detecting changes in expression even for low expression genes. This approach increases the dynamic range of a surface-bound fluorescence-based assay to reliably quantify small quantities of DNA that would be impossible with standard substrates.

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Section: Methodsmentioning

confidence: 99%

Improved Sensitivity of DNA Microarrays Using Photonic Crystal Enhanced Fluorescence

Mathias

Jones

et al. 2010

Anal. Chem.

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“…Since the introduction of narrowband reflectance filters using subwavelength periodic grating nanostructures [1–3], guided-mode resonance (GMR) filters (as they have come to be called, but also known as photonic crystal slabs or photonic crystal surfaces) have found application in label-free biodetection [4–6], fluorescence enhancement [7–9], optical limiting [10], and telecommunications [11, 12]. Despite the large number of papers that utilize electromagnetic simulation methods such as rigorous coupled wave analysis (RCWA) [13, 14] to study and design GMR filters, none fully consider the effects of optical losses from the materials that the GMR filter is comprised of and the resulting effects of optical loss upon the resonant filter characteristics.…”

Section: Introductionmentioning

confidence: 99%

Optimally designed narrowband guided-mode resonance reflectance filters for mid-infrared spectroscopy

Liu¹,

Schulmerich²,

Bhargava³

et al. 2011

Opt. Express

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An alternative to the well-established Fourier transform infrared (FT-IR) spectrometry, termed discrete frequency infrared (DFIR) spectrometry, has recently been proposed. This approach uses narrowband mid-infrared reflectance filters based on guided-mode resonance (GMR) in waveguide gratings, but filters designed and fabricated have not attained the spectral selectivity (≤ 32 cm−1) commonly employed for measurements of condensed matter using FT-IR spectroscopy. With the incorporation of dispersion and optical absorption of materials, we present here optimal design of double-layer surface-relief silicon nitride-based GMR filters in the mid-IR for various narrow bandwidths below 32 cm−1. Both shift of the filter resonance wavelengths arising from the dispersion effect and reduction of peak reflection efficiency and electric field enhancement due to the absorption effect show that the optical characteristics of materials must be taken into consideration rigorously for accurate design of narrowband GMR filters. By incorporating considerations for background reflections, the optimally designed GMR filters can have bandwidth narrower than the designed filter by the antireflection equivalence method based on the same index modulation magnitude, without sacrificing low sideband reflections near resonance. The reported work will enable use of GMR filters-based instrumentation for common measurements of condensed matter, including tissues and polymer samples.

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“…This work presents a PC enabled enhancement of optical down conversion through enhanced excitation of λ = 450 nm light and enhanced extraction of NIR light in the λ = 800-900 nm range. Nanoreplica molding, which is compatible with large area and flexible substrates, is used to fabricate the PC devices on plastic substrates [16,17]. The ability to make devices on flexible substrates extends the potential applications over traditional fabrication methods such as photolithography and electron beam lithography.…”

Section: Introductionmentioning

confidence: 99%

Enhanced quantum dot optical down-conversion using asymmetric 2D photonic crystals

Yang¹,

Cunningham²

2011

Opt. Express

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Asymmetric 2D photonic crystals were fabricated using polymer embedded PbS quantum dots on plastic substrates for enhancing optical down conversion efficiency from blue to near infrared wavelengths through enhanced extraction and excitation effects. We demonstrate 8x improvement of QD emission at normal incidence extraction from enhanced extraction and 2.5x improvement in power conversion efficiency from enhanced excitation.

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Integrated 2D photonic crystal stack filter fabricated using nanoreplica molding

Cited by 9 publications

References 28 publications

Improved Sensitivity of DNA Microarrays Using Photonic Crystal Enhanced Fluorescence

Improved Sensitivity of DNA Microarrays Using Photonic Crystal Enhanced Fluorescence

Optimally designed narrowband guided-mode resonance reflectance filters for mid-infrared spectroscopy

Enhanced quantum dot optical down-conversion using asymmetric 2D photonic crystals

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