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Nanotechnology

Nanophotonics

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  • Published Date
Displaying 76 - 100 of 266

Experimental confirmation of long hyperbolic polariton lifetimes in monoisotopic (10B) hexagonal boron nitride at room temperature

September 14, 2021
Author(s)
Georges Pavlidis, Jeffrey Schwartz, Joseph Matson, Thomas Folland, Song Liu, James Edgar, Joshua Caldwell, Andrea Centrone
Hyperbolic phonon polaritons (HPhPs) enable arbitrarily high confinements, low losses, and directional propagation – providing opportunities from hyperlensing to flat optics, and other advanced nanophotonics applications. In this work, two near-field

Single-photon detection in the mid-infrared up to 10 micron wavelength using tungsten silicide superconducting nanowire detectors

September 14, 2021
Author(s)
Varun Verma, Adriana Lita, Yao Zhai, Heli C. Vora, Richard Mirin, Sae Woo Nam, Boris Korzh, Alex Walter, Ryan Briggs, Marco Colangelo, Emma Wollman, Andrew Beyer, Jason Allmaras, D. Zhu, Ekkehart Schmidt, A. G. Kozorezov, Matthew Shaw
We developed superconducting nanowire single-photon detectors (SNSPDs) based on tungsten silicide (WSi) that show saturated internal detection efficiency up to a wavelength of 10 um. These detectors are promising for applications in the mid-infrared

Topological Frequency Combs and Nested Temporal Solitons

August 5, 2021
Author(s)
Sunil Mittal, Gregory Moille, Kartik Srinivasan, Yanne Chembo, Mohammad Hafezi
Recent advances in realizing optical frequency combs using nonlinear parametric processes in integrated photonic resonators have revolutionized on-chip optical clocks, spectroscopy, and multi channel optical communications. At the same time, the

Integrated superconducting nanowire single-photon detectors on titanium in-diffused lithium niobate waveguides

July 28, 2021
Author(s)
Varun Verma, Richard Mirin, Sae Woo Nam, Jan P. Hoepker, Maximilian Protte, Raimund Ricken, Victor Quiring, Christof Eigner, Christine Silberhorn, Tim J. Bartley
We demonstrate the integration of amorphous tungsten silicide superconducting nanowire single- photon detectors on titanium in-diffused lithium niobate waveguides. We show proof-of-principle detection of evanescently-coupled photons of wavelength 1550nm

Overcoming thermo-optical dynamics in broadband nanophotonic sensing

July 7, 2021
Author(s)
Mingkang Wang, Diego J. Perez, Vladimir Aksyuk
Advances in integrated photonics open exciting opportunities for batch-fabricated optical nano- electro-mechanical sensors with ultra-high sensitivities and bandwidths enabled by cavity optomechanics. However, heat from the amplified optical intensity

Hyperspectral study of the coupling between trions in WSe2 monolayers to a circular Bragg grating cavity

June 25, 2021
Author(s)
Marcelo I. Davanco, Oliver Iff, Simon Betzold, Magdalena Moczala-Dusanowska, Matthias Wurdack, Monika Emmerling, Sven Hofling, Christian Schneider
Circular Bragg gratings compose a very appealing photonic platform and nanophotonic interfacefor the controlled light-matter coupling of emitters in nanomaterials. Here, we discuss the integration ofexfoliated monolayers of WSe2with GaInP Bragg gratings

Interfacing Photonics to Free-Space via Large-area Inverse-designed Diffraction Elements and Metasurfaces

June 6, 2021
Author(s)
Alexander Yulaev, Wenqi Zhu, Chad Ropp, Daron Westly, Gregory Simelgor, Cheng Zhang, Henri Lezec, Amit Agrawal, Vladimir Aksyuk
Large-area inverse-designed photonic gratings and optical metasurfaces directly couple waveguides to wide free-space modes with custom wavefronts and polarizations in the visible and near-infrared. Design, modeling methods and experimental results are

Purcell-enhanced single photon source based on a deterministically placed WSe2 monolayer quantum dot in a circular Bragg grating cavity

May 28, 2021
Author(s)
Oliver Iff, Quirin Buchinger, Magdalena Moczala-Dusanowska, Martin Kamp, Simon Betzold, Marcelo I. Davanco, Kartik Srinivasan, Sefaattin Tongay, Carlos Anton-Solanas, Sven Hofling, Christian Schneider
We demonstrate a deterministic Purcell-enhanced single-photon source realized by integrating an atomically thin WSe2 layer with a circular Bragg grating cavity. The cavity significantly enhances the photoluminescence from the atomically thin layer, and

Towards integrated photonic interposers for processing octave-spanning microresonator frequency combs

May 26, 2021
Author(s)
Ashutosh Rao, Gregory Moille, Xiyuan Lu, Daron Westly, Davide Sacchetto, Michael Geiselmann, Michael Zervas, Scott Papp, John E. Bowers, Kartik Srinivasan
Microcombs - optical frequency combs generated in microresonators - have advanced tremendously in the last decade, and are advantageous for applications in frequency metrology, navigation, spectroscopy, telecommunications, and microwave photonics

Multifunctional metasurfaces enabled by simultaneous and independent control of phase and amplitude for orthogonal polarization states

May 25, 2021
Author(s)
Mingze Liu, Wenqi Zhu, Pengcheng Huo, Lei Feng, Maowen Song, Cheng Zhang, Lu Chen, Henri Lezec, Yanqing Lu, Amit Agrawal, Ting Xu
Monochromatic light can be characterized by its three fundamental properties: amplitude, phase and polarization. In this work, we propose a versatile, transmission-mode all-dielectric metasurface platform that can independently manipulate the phase and

Meta-grating outcouplers for optimized beam shaping in the visible

May 10, 2021
Author(s)
Chad Ropp, Alexander Yulaev, Daron Westly, Gregory Simelgor, Vladimir Aksyuk
Accurate coupling between optical modes at the interface between photonic chips and free space is required for the development of many on-chip devices. This control is critical in quantum technologies where large-diameter beams with designed mode profiles

Broadband generation of perfect Poincare beams via dielectric spin-multiplexed metasurface

April 13, 2021
Author(s)
Mingze Liu, Pengcheng Huo, Wenqi Zhu, Cheng Zhang, Si Zhang, Maowen Song, Song Zhang, Qianwei Zhou, Lu Chen, Henri Lezec, Amit Agrawal, Yanqing Lu, Ting Xu
Poincaré beam, which describes the space-variant polarization of a light beam carrying spin angular momentum (SAM) and orbital angular momentum (OAM), plays an important role in various optical applications. Since the radius of a Poincaré beam depends on

Substrate-enhanced photothermal nano-imaging of surface polaritons in monolayer graphene

April 1, 2021
Author(s)
Samuel Berweger, Fabian Menges, Honghua Yang, Tao Jiang, Markus B. Raschke
Surface polaritons comprise a wealth of light-matter interactions with deep subwavelength scale confinement of electromagnetic modes. However, their nanoscale localized dissipation and thermalization processes are not readably accessible experimentally

Substrate-mediated hyperbolic phonon polaritons in MoO3

February 15, 2021
Author(s)
Jeffrey Schwartz, Son T. Le, Sergiy Krylyuk, Curt A. Richter, Albert Davydov, Andrea Centrone
Hyperbolic phonon polaritons (HPhPs) are hybrid excitations of light and coherent charge oscillations that exist in strongly optically anisotropic, two-dimensional materials (e.g., MoO3). These polaritons propagate through the material's volume with long

Polyvinyl Acetate-Based Polymer Host for Optical and Far-Infrared Spectroscopy of Individualized Nanoparticles

January 15, 2021
Author(s)
Jeffrey Fagan, Henry Wladkowski, Julian Duarte, Shashank R. Nandyala, Joshua Walker, Subash Kattel, Jeffrey Blackburn, Jon Pikal, William D. Rice
Preparation techniques for producing films of individualized, solution dispersed nanoparticles (NPs) for optical spectroscopy are often technically challenging and tailored for a specific NP system. In this work, we present a rapid, easy, and economical

Independent Amplitude Control of Arbitrary Orthogonal States of Polarization via Dielectric Metasurfaces

December 23, 2020
Author(s)
Qingbin Fan, Mingze Liu, Cheng Zhang, Wenqi Zhu, Yilin Wang, Peicheng Lin, Feng Yan, Lu Chen, Henri Lezec, Yanqing Lu, Amit Agrawal, Ting Xu
Exquisite polarization control using optical metasurfaces has attracted considerable attention thanks to their ability to manipulate multichannel independent wavefronts with subwavelength resolution. Here we present a new class of metasurface polarization
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