154,865 Works

Ring-type plasmon resonance in metallic nanoshells

Boris Apter, Oren Guilatt & Uzi Efron
A simple, approximate theoretical model of surface plasmon resonance in two-dimensional metal nanoshells is developed. The model is based on the concept of short-range surface plasmons propagating around closed circular metal nanotubes. In this model, the plasmon resonance in a metal nanotube is treated as a propagating, self-interfering plasmonic wave, in a ring-type resonance, at plasmonic wavelengths matching an integer fraction of the nanotube’s effective circumference. The model is validated by detailed computer simulations based...

Media 2: Ring-type plasmon resonance in metallic nanoshells

Boris Apter, Oren Guilatt & Uzi Efron
Originally published in Applied Optics on 01 October 2011 (ao-50-28-5457)

Media 2: Ring-type plasmon resonance in metallic nanoshells

Boris Apter, Oren Guilatt & Uzi Efron
Originally published in Applied Optics on 01 October 2011 (ao-50-28-5457)

Ring-type plasmon resonance in metallic nanoshells

Boris Apter, Oren Guilatt & Uzi Efron
A simple, approximate theoretical model of surface plasmon resonance in two-dimensional metal nanoshells is developed. The model is based on the concept of short-range surface plasmons propagating around closed circular metal nanotubes. In this model, the plasmon resonance in a metal nanotube is treated as a propagating, self-interfering plasmonic wave, in a ring-type resonance, at plasmonic wavelengths matching an integer fraction of the nanotube’s effective circumference. The model is validated by detailed computer simulations based...

Media 1: Ring-type plasmon resonance in metallic nanoshells

Boris Apter, Oren Guilatt & Uzi Efron
Originally published in Applied Optics on 01 October 2011 (ao-50-28-5457)

Media 1: Ring-type plasmon resonance in metallic nanoshells

Boris Apter, Oren Guilatt & Uzi Efron
Originally published in Applied Optics on 01 October 2011 (ao-50-28-5457)

Application of “parallel” moiré deflectometry and the single beam Z-scan technique in the measurement of the nonlinear refractive index

Saifollah Rasouli, H. Ghasemi, M. T. Tavassoly & H. R. Khalesifard
In this paper, the application of “parallel” moiré deflectometry in measuring the nonlinear refractive index of materials is reported. In “parallel” moiré deflectometry the grating vectors are parallel, and the resulting moiré fringes are also parallel to the grating lines. Compared to “rotational” moiré deflectometry and the Z-scan technique, which cannot easily determine the moiré fringe’s angle of rotation and is sensitive to power fluctuations, respectively, “parallel” moiré deflectometry is more reliable, which allows one...

Application of “parallel” moiré deflectometry and the single beam Z-scan technique in the measurement of the nonlinear refractive index

Saifollah Rasouli, H. Ghasemi, M. T. Tavassoly & H. R. Khalesifard
In this paper, the application of “parallel” moiré deflectometry in measuring the nonlinear refractive index of materials is reported. In “parallel” moiré deflectometry the grating vectors are parallel, and the resulting moiré fringes are also parallel to the grating lines. Compared to “rotational” moiré deflectometry and the Z-scan technique, which cannot easily determine the moiré fringe’s angle of rotation and is sensitive to power fluctuations, respectively, “parallel” moiré deflectometry is more reliable, which allows one...

Media 1: Application of “parallel” moiré deflectometry and the single beam Z-scan technique in the measurement of the nonlinear refractive index

Saifollah Rasouli, H. Ghasemi, M. T. Tavassoly & H. R. Khalesifard
Originally published in Applied Optics on 01 June 2011 (ao-50-16-2356)

Media 1: Application of “parallel” moiré deflectometry and the single beam Z-scan technique in the measurement of the nonlinear refractive index

Saifollah Rasouli, H. Ghasemi, M. T. Tavassoly & H. R. Khalesifard
Originally published in Applied Optics on 01 June 2011 (ao-50-16-2356)

Media 1: Improved reconstructions and generalized filtered back projection for optical projection tomography

Udo Jochen Birk, Alex Darrell, Nikos Konstantinides, Ana Sarasa-Renedo & Jorge Ripoll
Originally published in Applied Optics on 01 February 2011 (ao-50-4-392)

Improved reconstructions and generalized filtered back projection for optical projection tomography

Udo Jochen Birk, Alex Darrell, Nikos Konstantinides, Ana Sarasa-Renedo & Jorge Ripoll
Optical projection tomography (OPT) is a noninvasive imaging technique that enables imaging of small specimens (<1 cm), such as organs or animals in early developmental stages. In this paper, we present a set of computational methods that can be applied to the acquired data sets in order to correct for (a) unknown background or illumination intensity distributions over the field of view, (b) intensity spikes in single CCD pixels (so-called “hot pixels”), and (c) refractive index mismatch between the...

Media 1: Improved reconstructions and generalized filtered back projection for optical projection tomography

Udo Jochen Birk, Alex Darrell, Nikos Konstantinides, Ana Sarasa-Renedo & Jorge Ripoll
Originally published in Applied Optics on 01 February 2011 (ao-50-4-392)

Improved reconstructions and generalized filtered back projection for optical projection tomography

Udo Jochen Birk, Alex Darrell, Nikos Konstantinides, Ana Sarasa-Renedo & Jorge Ripoll
Optical projection tomography (OPT) is a noninvasive imaging technique that enables imaging of small specimens (<1 cm), such as organs or animals in early developmental stages. In this paper, we present a set of computational methods that can be applied to the acquired data sets in order to correct for (a) unknown background or illumination intensity distributions over the field of view, (b) intensity spikes in single CCD pixels (so-called “hot pixels”), and (c) refractive index mismatch between the...

Media 2: Atmospheric ozone and colors of the Antarctic twilight sky

Raymond L. Lee, Wolfgang Meyer & Götz Hoeppe
Originally published in Applied Optics on 01 October 2011 (ao-50-28-F162)

Media 2: Atmospheric ozone and colors of the Antarctic twilight sky

Raymond L. Lee, Wolfgang Meyer & Götz Hoeppe
Originally published in Applied Optics on 01 October 2011 (ao-50-28-F162)

Atmospheric ozone and colors of the Antarctic twilight sky

Raymond L. Lee, Wolfgang Meyer & Götz Hoeppe
Zenith skylight is often distinctly blue during clear civil twilights, and much of this color is due to preferential absorption at longer wavelengths by ozone’s Chappuis bands. Because stratospheric ozone is greatly depleted in the austral spring, such decreases could plausibly make Antarctic twilight colors less blue then, including at the zenith. So for several months in 2005, we took digital images of twilight zenith and antisolar skies at Antarctica’s Georg von Neumayer Station. Our...

Atmospheric ozone and colors of the Antarctic twilight sky

Raymond L. Lee, Wolfgang Meyer & Götz Hoeppe
Zenith skylight is often distinctly blue during clear civil twilights, and much of this color is due to preferential absorption at longer wavelengths by ozone’s Chappuis bands. Because stratospheric ozone is greatly depleted in the austral spring, such decreases could plausibly make Antarctic twilight colors less blue then, including at the zenith. So for several months in 2005, we took digital images of twilight zenith and antisolar skies at Antarctica’s Georg von Neumayer Station. Our...

Media 1: Atmospheric ozone and colors of the Antarctic twilight sky

Raymond L. Lee, Wolfgang Meyer & Götz Hoeppe
Originally published in Applied Optics on 01 October 2011 (ao-50-28-F162)

Media 1: Atmospheric ozone and colors of the Antarctic twilight sky

Raymond L. Lee, Wolfgang Meyer & Götz Hoeppe
Originally published in Applied Optics on 01 October 2011 (ao-50-28-F162)

Media 1: Simplified homography matrix for a large-scale camera array system

Kenji Yamamoto, Yasuyuki Ichihashi, Takanori Senoh, Ryutaro Oi & Taiichiro Kurita
Originally published in Applied Optics on 01 December 2011 (ao-50-34-H203)

Media 1: Simplified homography matrix for a large-scale camera array system

Kenji Yamamoto, Yasuyuki Ichihashi, Takanori Senoh, Ryutaro Oi & Taiichiro Kurita
Originally published in Applied Optics on 01 December 2011 (ao-50-34-H203)

Simplified homography matrix for a large-scale camera array system

Kenji Yamamoto, Yasuyuki Ichihashi, Takanori Senoh, Ryutaro Oi & Taiichiro Kurita
We want to use a large-scale camera array system in which each camera is placed at the desired position to photograph a subject and later render images of the subject viewed from various directions or render images for a three-dimensional display. The homography matrix for each camera should be calculated in advance to correct the captured images. In the case that each camera is physically facing toward the subject as precisely as possible but the...

Simplified homography matrix for a large-scale camera array system

Kenji Yamamoto, Yasuyuki Ichihashi, Takanori Senoh, Ryutaro Oi & Taiichiro Kurita
We want to use a large-scale camera array system in which each camera is placed at the desired position to photograph a subject and later render images of the subject viewed from various directions or render images for a three-dimensional display. The homography matrix for each camera should be calculated in advance to correct the captured images. In the case that each camera is physically facing toward the subject as precisely as possible but the...

Media 2: Automated compensation of misalignment in phase retrieval based on a spatial light modulator

Mostafa Agour, Claas Falldorf, Christoph V. Kopylow & Ralf B. Bergmann
Originally published in Applied Optics on 20 August 2011 (ao-50-24-4779)

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