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  1. Article ; Online: Using an acousto-optic modulator as a fast spatial light modulator.

    Liu, Xialin / Braverman, Boris / Boyd, Robert W

    Optics express

    2023  Volume 31, Issue 2, Page(s) 1501–1515

    Abstract: High-speed spatial light modulators (SLM) are crucial components for free-space communication and structured illumination imaging. Current approaches for dynamical spatial mode generation, such as liquid crystal SLMs or digital micromirror devices, are ... ...

    Abstract High-speed spatial light modulators (SLM) are crucial components for free-space communication and structured illumination imaging. Current approaches for dynamical spatial mode generation, such as liquid crystal SLMs or digital micromirror devices, are limited to a maximum pattern refresh rate of 10 kHz and have a low damage threshold. We demonstrate that arbitrary spatial profiles in a laser pulse can be generated by mapping the temporal radio-frequency (RF) waveform sent to an acousto-optic modulator (AOM) onto the optical field. We find that the fidelity of the SLM performance can be improved through numerical optimization of the RF waveform to overcome the nonlinear effect of AOM. An AOM can thus be used as a 1-dimensional SLM, a technique we call acousto-optic spatial light modulator (AO-SLM), which has 50 µm pixel pitch, over 1 MHz update rate, and high damage threshold. We simulate the application of AO-SLM to single-pixel imaging, which can reconstruct a 32×32 pixel complex object at a rate of 11.6 kHz with 98% fidelity.
    Language English
    Publishing date 2023-01-16
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1491859-6
    ISSN 1094-4087 ; 1094-4087
    ISSN (online) 1094-4087
    ISSN 1094-4087
    DOI 10.1364/OE.471910
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Orthogonal spatial coding with stimulated parametric down-conversion.

    Xu, Yang / Tang, Sirui / Nicholas Black, A / Boyd, Robert W

    Optics express

    2023  Volume 31, Issue 25, Page(s) 42723–42729

    Abstract: Orthogonal optical coding is widely used in classical multi-user communication networks. Using the phase conjugation property of stimulated parametric down-conversion, we extend the current time-domain orthogonal optical coding scheme to the spatial ... ...

    Abstract Orthogonal optical coding is widely used in classical multi-user communication networks. Using the phase conjugation property of stimulated parametric down-conversion, we extend the current time-domain orthogonal optical coding scheme to the spatial domain to encode and decode image information. In this process, the idler beam inherits the complex conjugate of the field information encoded in the seed beam. An encoding phase mask introduced onto the input seed beam blurs the image transferred to the idler. The original image is restored by passing the coded transferred image through a corrective phase mask placed in the momentum space of the idler beam. We expect that this scheme can also inspire new techniques in secure image transmission, aberration cancellation, and frequency conversion imaging.
    Language English
    Publishing date 2023-12-12
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1491859-6
    ISSN 1094-4087 ; 1094-4087
    ISSN (online) 1094-4087
    ISSN 1094-4087
    DOI 10.1364/OE.506383
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Designing high-performance propagation-compressing spaceplates using thin-film multilayer stacks.

    Pagé, Jordan T R / Reshef, Orad / Boyd, Robert W / Lundeen, Jeff S

    Optics express

    2022  Volume 30, Issue 2, Page(s) 2197–2205

    Abstract: The development of metasurfaces has enabled unprecedented portability and functionality in flat optical devices. Spaceplates have recently been introduced as a complementary element to reduce the space between individual metalenses, which will further ... ...

    Abstract The development of metasurfaces has enabled unprecedented portability and functionality in flat optical devices. Spaceplates have recently been introduced as a complementary element to reduce the space between individual metalenses, which will further miniaturize entire imaging devices. However, spaceplates necessitate an optical response which depends on the transverse spatial frequency component of a light field - therefore making it challenging both to design them and to assess their ultimate performance and potential. Here, we employ inverse-design techniques to explore the behaviour of general thin-film-based spaceplates. We observe a tradeoff between the compression factor
    Language English
    Publishing date 2022-02-21
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1491859-6
    ISSN 1094-4087 ; 1094-4087
    ISSN (online) 1094-4087
    ISSN 1094-4087
    DOI 10.1364/OE.443067
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Nuclear physics: Neutrons with a twist.

    Boyd, Robert W

    Nature

    2015  Volume 525, Issue 7570, Page(s) 462–464

    Language English
    Publishing date 2015-09-24
    Publishing country England
    Document type Comment ; Journal Article
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/525462a
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 26: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)
    Zs.MG 9: Show issues
    Zs.MO 244: Show issues

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  5. Article: Strongly Coupled Plasmon Polaritons in Gold and Epsilon-Near-Zero Bifilms.

    Choudhary, Saumya / Iqbal, Saleem / Karimi, Mohammad / Reshef, Orad / Alam, M Zahirul / Boyd, Robert W

    ACS photonics

    2023  Volume 10, Issue 1, Page(s) 162–169

    Abstract: Epsilon-near-zero (ENZ) polaritons in a thin transparent conducting-oxide film exhibit a significant electric field enhancement and localization within the film at frequencies close to their plasma frequency, but do not propagate. Meanwhile, plasmon ... ...

    Abstract Epsilon-near-zero (ENZ) polaritons in a thin transparent conducting-oxide film exhibit a significant electric field enhancement and localization within the film at frequencies close to their plasma frequency, but do not propagate. Meanwhile, plasmon polariton modes in thin metallic films can propagate for several microns, but are more loosely confined in the metal. Here, we propose a strongly coupled bilayered structure of a thin gold film on a thin indium tin oxide (ITO) film that supports hybrid polariton modes. We experimentally characterize the dispersion of these modes and show that they have propagation lengths of 4-8 μm while retaining mode confinement greater than that of the polariton in gold films by nearly an order of magnitude. We study the tunability of this coupling strength by varying the thickness of the ITO film and show that ultrastrong coupling is possible at certain thicknesses. The unusual linear and nonlinear optical properties of ITO at ENZ frequencies make these bifilms useful for the active tuning of strong coupling, ultrafast switching, and enhanced nonlinear interactions at near-infrared frequencies.
    Language English
    Publishing date 2023-01-03
    Publishing country United States
    Document type Journal Article
    ISSN 2330-4022
    ISSN 2330-4022
    DOI 10.1021/acsphotonics.2c01412
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Dynamic coherent perfect absorption in nonlinear metasurfaces.

    Alaee, Rasoul / Vaddi, Yaswant / Boyd, Robert W

    Optics letters

    2020  Volume 45, Issue 23, Page(s) 6414–6417

    Abstract: In this Letter, we propose a tunable coherent perfect absorber based on ultrathin nonlinear metasurfaces. A nonlinear metasurface is made of plasmonic nanoantennas coupled to an epsilon-near-zero material with a large optical nonlinearity. The coherent ... ...

    Abstract In this Letter, we propose a tunable coherent perfect absorber based on ultrathin nonlinear metasurfaces. A nonlinear metasurface is made of plasmonic nanoantennas coupled to an epsilon-near-zero material with a large optical nonlinearity. The coherent perfect absorption is achieved by controlling the relative phases of the input beams. Here, we show that the optical response of the nonlinear metasurface can be tuned from a complete to a partial absorption by changing the intensity of the pump beam. The proposed nonlinear metasurface can be used to design optically tunable thermal emitters, modulators, and sensors.
    Language English
    Publishing date 2020-12-01
    Publishing country United States
    Document type Journal Article
    ISSN 1539-4794
    ISSN (online) 1539-4794
    DOI 10.1364/OL.402380
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Suppression of Nonlinear Optical Rogue Wave Formation Using Polarization-Structured Beams.

    Black, A Nicholas / Choudhary, Saumya / Arroyo-Rivera, E Samuel / Woodworth, Hayden / Boyd, Robert W

    Physical review letters

    2022  Volume 129, Issue 13, Page(s) 133902

    Abstract: A nonlinear self-focusing material can amplify random small-amplitude phase modulations present in an optical beam, leading to the formation of amplitude singularities commonly referred to as optical caustics. By imposing polarization structuring on the ... ...

    Abstract A nonlinear self-focusing material can amplify random small-amplitude phase modulations present in an optical beam, leading to the formation of amplitude singularities commonly referred to as optical caustics. By imposing polarization structuring on the beam, we demonstrate the suppression of amplitude singularities caused by nonlinear self-phase modulation. Our results are the first to indicate that polarization-structured beams can suppress nonlinear caustic formation in a saturable self-focusing medium and add to the growing understanding of catastrophic self-focusing effects in beams containing polarization structure.
    Language English
    Publishing date 2022-09-02
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.129.133902
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    In stock of ZB MED Bonn / Germany

    Z 4' 58/153: Show issues

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  8. Article ; Online: Interactions of Fundamental Mie Modes with Thin Epsilon-near-Zero Substrates.

    Karimi, Mohammad / Awan, Kashif Masud / Vaddi, Yaswant / Alaee, Rasoul / Upham, Jeremy / Alam, M Zahirul / Boyd, Robert W

    Nano letters

    2023  Volume 23, Issue 24, Page(s) 11555–11561

    Abstract: Extensive research has focused on Mie modes in dielectric nanoresonators, enabling the creation of thin optical devices surpassing their bulk counterparts. This study investigates the interactions between two fundamental Mie modes, electric and magnetic ... ...

    Abstract Extensive research has focused on Mie modes in dielectric nanoresonators, enabling the creation of thin optical devices surpassing their bulk counterparts. This study investigates the interactions between two fundamental Mie modes, electric and magnetic dipoles, and the epsilon-near-zero (ENZ) mode. Analytical, simulation, and experimental analyses reveal that the presence of the ENZ substrate significantly modifies these modes despite a large size mismatch. Electric and magnetic dipole modes, both with ∼12 THz line widths, exhibit 21 and 26 THz anticrossings, respectively, when coupled to the ENZ mode, indicating strong coupling. We also demonstrate that this strongly coupled system yields notably large subpicosecond nonlinear responses. Our results establish a solid foundation for designing functional, nonlinear, dynamic dielectric metasurfaces with ENZ materials.
    Language English
    Publishing date 2023-12-01
    Publishing country United States
    Document type Journal Article
    ISSN 1530-6992
    ISSN (online) 1530-6992
    DOI 10.1021/acs.nanolett.3c03301
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  9. Article: An introduction to ghost imaging: quantum and classical.

    Padgett, Miles J / Boyd, Robert W

    Philosophical transactions. Series A, Mathematical, physical, and engineering sciences

    2017  Volume 375, Issue 2099

    Abstract: Ghost imaging has been a subject of interest to the quantum optics community for the past 20 years. Initially seen as manifestation of quantum spookiness, it is now recognized as being implementable in both single- and many-photon number regimes. Beyond ... ...

    Abstract Ghost imaging has been a subject of interest to the quantum optics community for the past 20 years. Initially seen as manifestation of quantum spookiness, it is now recognized as being implementable in both single- and many-photon number regimes. Beyond its scientific curiosity, it is now feeding novel imaging modalities potentially offering performance attributes that traditional approaches cannot match.This article is part of the themed issue 'Quantum technology for the 21st century'.
    Language English
    Publishing date 2017-06-25
    Publishing country England
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't
    ZDB-ID 208381-4
    ISSN 1471-2962 ; 1364-503X ; 0080-4614 ; 0264-3820 ; 0264-3952
    ISSN (online) 1471-2962
    ISSN 1364-503X ; 0080-4614 ; 0264-3820 ; 0264-3952
    DOI 10.1098/rsta.2016.0233
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

    Z 4' 46/25: Show issues
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  10. Article ; Online: Quantum imaging and information.

    Magaña-Loaiza, Omar S / Boyd, Robert W

    Reports on progress in physics. Physical Society (Great Britain)

    2019  Volume 82, Issue 12, Page(s) 124401

    Abstract: The maturity of fields such as optical physics and quantum optics has brought with it a new era where the photon represents a promising information resource. In the past few years, scientists and engineers have exploited multiple degrees of freedom of ... ...

    Abstract The maturity of fields such as optical physics and quantum optics has brought with it a new era where the photon represents a promising information resource. In the past few years, scientists and engineers have exploited multiple degrees of freedom of the photon to perform information processing for a wide variety of applications. Of particular importance, the transverse spatial degree of freedom has offered a flexible platform to test complex quantum information protocols in a relatively simple fashion. In this regard, novel imaging techniques that exploit the quantum properties of light have also been investigated. In this review article, we define the fundamental parameters that describe the spatial wavefunction of the photon and establish their importance for applications in quantum information processing. More specifically, we describe the underlying physics behind remarkable protocols in which information is processed through high-dimensional spatial states of photons with sub-shot-noise levels or where quantum images with unique resolution features are formed. We also discuss the fundamental role that certain imaging techniques have played in the development of novel methods for quantum information processing and vice versa.
    Language English
    Publishing date 2019-10-22
    Publishing country England
    Document type Journal Article
    ZDB-ID 205657-4
    ISSN 1361-6633 ; 0034-4885
    ISSN (online) 1361-6633
    ISSN 0034-4885
    DOI 10.1088/1361-6633/ab5005
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    In stock of ZB MED Bonn / Germany

    Z 52/38: Show issues

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