Ultra-high extinction ratio micropolarizers using plasmonic lenses

Peltzer, J. J.; Flammer, P. D.; Furtak, T. E.; Collins, R. T.; Hollingsworth, R. E.

doi:10.1364/oe.19.018072

Cited by 13 publications

(5 citation statements)

References 22 publications

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“…For practical applications, the proposed structure may be fabricated onto a suitable substrate material such as SiO 2 or CaF 2 . If the slit region is filled with a dielectric rather than air, the fabrication process will not be too difficult because similar structures have been fabricated by others [10,12,18,19]. High performance is still expected when the slit region is filled with a dielectric material, although some tuning of the parameters is necessary for wavelength selection.…”

Section: High Transmission and Extinction Ratiomentioning

confidence: 99%

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Wide-angle near infrared polarizer with extremely high extinction ratio

Liu¹,

Zhao²,

Zhang³

2013

Opt. Express

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An infrared polarizer is designed with a predicted extremely high extinction ratio exceeding 3 × 10(16) and transmittance higher than 89% for one polarization in the wavelength region from 1.6 to 2.3 µm. Moreover, the performance does not start to deteriorate until 60° tilting angle. The wide-angle high transmission is attributed to the excitation of magnetic polaritons and suitable LC circuit models, which could predict the resonance wavelengths quantitatively, are developed to better understand the underlying mechanisms. The proposed structure can be tuned by controlling the geometrical parameters for different potential applications such as polarizers, beamsplitters, filters, and transparent electrodes.

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Section: High Transmission and Extinction Ratiomentioning

confidence: 99%

“…The highest extinction ratio was predicted to be 10 9 at λ = 5 μm [11]. Peltzer et al [12] designed and fabricated a near-infrared polarizer with a theoretically predicted extinction ratio as high as 10 11 in a narrow spectral region.…”

Section: Introductionmentioning

confidence: 99%

Wide-angle near infrared polarizer with extremely high extinction ratio

Liu¹,

Zhao²,

Zhang³

2013

Opt. Express

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“…Division-of-focal plane sensors combine both imaging and filtering capabilities in a single imaging device [62,82,83,[93][94][95][96][97]. The realization of these sensors has become possible by monolithic integration of photosensitive elements with spectral and polarization filters fabricated using various polymers [97][98][99], dielectrics [100,101], metallic CMOS wires [102,103], nanomaterials [104][105][106][107], plasmonics [108], or metasurfaces [109]. Tailored image-processing algorithms for these sensors have improved tremendously the accuracy of the captured polarization information [110] as well as improved the spatial resolution of sensors using interpolation algorithms [111][112][113][114][115].…”

Section: A Bioinspired Color-polarization Imaging Sensormentioning

confidence: 99%

Multichannel spectrometers in animals

2018

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Multispectral, hyperspectral, polarimetric, and other types of multichannel imaging spectrometers are coming into common use for a variety of applications, including remote sensing, material identification, forensics, and medical diagnosis. These instruments are often bulky and intolerant of field abuse, so designing compact, reliable, portable, and robust devices is a priority. In contrast to most engineering designs, animals have been building compact and robust multichannel imaging systems for millennia-their eyes. Biological sensors arise by evolution, of course, and are not designed 'for' a particular use; they exist because the creatures that were blessed with useful mutations were better able to survive and reproduce than their competitors. While this is an inefficient process for perfecting a sensor, it brings unexpected innovations and novel concepts into visual system design-concepts that may be useful in the inspiration of new engineered solutions to problematic challenges, like the ones mentioned above. Here, we review a diversity of multichannel visual systems from both vertebrate and invertebrate animals, considering the receptor molecules and cells, spectral sensitivity and its tuning, and some aspects of the higher-level processing systems used to shape spectral (and polarizational) channels in vision. The eyes of mantis shrimps are presented as potential models for biomimetic multichannel imaging systems. We end with a description of a bioinspired, newly developed multichannel spectral/polarimetric imaging system based on mantis shrimp vision that is highly adaptable to field application.

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“…For example, metamaterial surfaces acting as achromatic quarter-wave plates [18] or as high-extinction ratio polarization filters [15] can further advance the field of polarization imaging when integrated with an array of imaging elements. These advances will bring the complete imaging system design closer to biology in terms of sensitivity and selectivity to both spectral and polarization information.…”

Section: Cmos Sensors With Polarization Selectivitymentioning

confidence: 99%

Bioinspired Polarization Imaging Sensors: From Circuits and Optics to Signal Processing Algorithms and Biomedical Applications

et al. 2014

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In this paper, we present recent work on bioinspired polarization imaging sensors and their applications in biomedicine. In particular, we focus on three different aspects of these sensors. First, we describe the electro–optical challenges in realizing a bioinspired polarization imager, and in particular, we provide a detailed description of a recent low-power complementary metal–oxide–semiconductor (CMOS) polarization imager. Second, we focus on signal processing algorithms tailored for this new class of bioinspired polarization imaging sensors, such as calibration and interpolation. Third, the emergence of these sensors has enabled rapid progress in characterizing polarization signals and environmental parameters in nature, as well as several biomedical areas, such as label-free optical neural recording, dynamic tissue strength analysis, and early diagnosis of flat cancerous lesions in a murine colorectal tumor model. We highlight results obtained from these three areas and discuss future applications for these sensors.

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Ultra-high extinction ratio micropolarizers using plasmonic lenses

Cited by 13 publications

References 22 publications

Wide-angle near infrared polarizer with extremely high extinction ratio

Wide-angle near infrared polarizer with extremely high extinction ratio

Multichannel spectrometers in animals

Bioinspired Polarization Imaging Sensors: From Circuits and Optics to Signal Processing Algorithms and Biomedical Applications

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