Anisotropic leaky-mode modulator for holographic video displays

Smalley, Daniel; Smithwick, Q Y J; Bove, V. Michael; Barabas, James; Jolly, Sundeep

doi:10.1038/nature12217

Cited by 201 publications

(142 citation statements)

References 15 publications

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“…The imaginary wave vector means that the wave is evanescent and decays exponentially from the interface. According the Fresnel's coefficient of reflection between the dielectric medium 1 and 2 (the permittivity is 1 ε and 2 ε , and the permeability is 1 2…”

Section: Phase Shift On a Metal Subwavelength Gratingmentioning

confidence: 99%

“…MIT Spatial Imaging Group headed by Stephen Benton brought holography from the age of film to the digital age in 1989 and this is a remarkably transition. Since then R&D on the devices for true holographic video display is advanced [1,2,3]. Heart of the holographic video is the devices that modulate the light by some kinds of spatial light modulators (SLMs).…”

Section: Introductionmentioning

confidence: 99%

“…The pixel size of SLM needs to close to the wavelength of visible light scale to provide the desired viewing angle in holographic display [1,2]. However, Kent state university researchers have pointed that simply scaling the pixel size in the off-the-shelf LCOS down to one micrometer or being close to the wavelength of visible light scale would have very low diffraction due to the fringing field effects in relative think cell to meet the need of 2π retardation [4].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Active LSP based structure for Holographic 3D Video Display

Wang¹,

Zhang²,

Shen³

et al. 2016

Proceedings of the 2nd Annual International Conference on Advanced Material Engineering (AME 2016)

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Abstract.A novel structure hybridized localized surface plasmons (LSP) with liquid crystals(LC) to offer active modulation on sub wavelength structure, it allow for CMOS-compatible fabrication is presented with theoretical explanations and the results of numerical simulation. Among the candidate devices for true holographic video display, liquid crystal on silicon (LCOS), combining large birefringence liquid crystal with CMOS-compatible technology, is an appropriate digital spatial light modulator (SLM) for the purpose. In this work, the top electrode of LCOS is replaced by LSP Fabry-Pe´rot (FP) structure, which interacts with incident light on sub-wavelength scales. While keeping the advantages of LCOS, its physical process is novel. Instead of accumulation during light passed, phase retardation is offered by an anomalous reflection with high-efficiency. Our investigations are numerically carried out by the commercial software CST Microwave Studios. Some thoughts and inchoate simulation results are shared here.

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Section: Phase Shift On a Metal Subwavelength Gratingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Active LSP based structure for Holographic 3D Video Display

Wang¹,

Zhang²,

Shen³

et al. 2016

Proceedings of the 2nd Annual International Conference on Advanced Material Engineering (AME 2016)

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show abstract

“…Leaky-mode modulators were first introduced as a solution for holographic video display in 2013 and were shown to have distinct advantages over the existing state-of-the-art 1 (a summary of these advantages is given in Table 1). At that time, the spatial light modulators most commonly used for holographic video displays were pixelated modulators 2 and acousto-optic Bragg cells.…”

Section: Introductionmentioning

confidence: 99%

Progress on characterization and optimization of leaky-mode modulators for holographic video

Smalley

McLaughlin

Leach

et al. 2015

J. Micro/Nanolith. MEMS MOEMS

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Abstract. We give a summary of the progress we have made in the fabrication of guided wave devices for use in holographic video displays. This progress includes identifying anisotropic leaky-mode modulators as a platform for holographic display, the development of a characterization apparatus to extract key parameters from leaky-mode devices, and the identification of optimized waveguide parameters for frequency-controlled color display.

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“…Such large angular loci steering, as well as the accompanying sharp transitions from bound modes to radiating states, may find applications in integrated photonic devices for sensing, spatial-light modulation or filtering 32,33 . Figure 4 shows the experimental signature of the anisotropy-induced BICs, obtained by modal spectroscopy spectra in a prism-coupling geometry (see methods, and supplementary Fig.…”

mentioning

confidence: 99%

Anisotropy-induced photonic bound states in the continuum

2017

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Bound states in the continuum (BICs) are radiationless localized states embedded in the part of the parameter space that otherwise corresponds to radiative modes. Many decades after their original prediction 1,2 and early observations in acoustic systems 3 , such states have been recently demonstrated in photonic structures with engineered geometries [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] . In this paper we put forward a mechanism, based on waveguiding structures containing anisotropic birefringent materials, which affords the existence of BICs that exhibit fundamentally-new properties. In particular, anisotropy-induced BICs may exist in symmetric as well as in asymmetric geometries; they form in tunable angular propagation directions; their polarization may be pure transverse-electric, pure transverse-magnetic or full-vector with tunable polarization-hybridity; and they may be the only possible bound states of properly designed structures, thus appearing as a discrete, isolated bound state embedded in a whole sea of radiative states. 2Bound states in the continuum were originally predicted in 1929 by von Neumann and Wigner as discrete fully-bounded quantum states with energies above the continuum of the corresponding Hamiltonian. Signatures of acoustic BICs were observed experimentally several decades ago 3 , but only after the recent theoretical studies and landmark experiments conducted in classical photonic systems the implications of the almost century-old concept were properly appreciated, stimulating deeper understanding over its origin [9][10][11] and inspiring new schemes 12-14 and applications [15][16][17] .BICs discovered to date are almost-pure transverse-electric (TE) or transversemagnetic (TM) waves 4,[7][8][9][19][20][21] , namely with a negligible fraction of energy being carried by the respective orthogonal polarization. The corresponding trapping mechanism can thus be intuitively viewed as a scalar or spinor potential. In contrast, photonic structures containing anisotropic media can support bound states that, in general, involve the fullvector electric and magnetic field components. This important feature opens up the possibility to search for full-vector BICs that cannot exist in scalar analogies. In this paper we explore the concept and expose its potential.By and large, coupling localized states with a coexisting radiative continuum results in energy being shed away and thus in unbound states that decay and fade away during propagation. Bound states can only exist when such transverse radiative leakage is suppressed by a suitable mechanism. Here we address the existence of such mechanism in optical waveguiding structures fabricated in anisotropic media. We restrict ourselves to the simplest structures fabricated in birefringent uniaxial natural materials, the optical axes of the crystals are set to lie on the waveguide plane forming an angle θ with the wave propagation direction, θ is set to be equal for all materials, and we set the cladding to be an isotropic medium (Fig. ...

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Anisotropic leaky-mode modulator for holographic video displays

Cited by 201 publications

References 15 publications

Active LSP based structure for Holographic 3D Video Display

Active LSP based structure for Holographic 3D Video Display

Progress on characterization and optimization of leaky-mode modulators for holographic video

Anisotropy-induced photonic bound states in the continuum

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