Open optical cavities based on metasurfaces

Author: wyrk

August undefined, 2024

WebThe optical cavity has a stronger effect on the gain of a FEL than in most conventional lasers and the gain can also affect the optical mode. The gain is maximized for an … WebTowards overcoming this limitation, we propose and demonstrate an open magneto-optical cavity containing a thin-film of yttrium iron garnet (YIG). We achieve a 0.1 pL (100 μ 𝜇 \mu italic_μ m 3 3 {}^{3} start_FLOATSUPERSCRIPT 3 end_FLOATSUPERSCRIPT ) optical mode volume, ∼ similar-to \sim ∼ 50 times smaller than previous devices.

Ultrathin and Multicolor Optical Cavities with Embedded …

Web15 de fev. de 2024 · A switchable metasurface composed of plasmonic split ring resonators and a dye-doped liquid crystal is developed and can be attributed to the behavior described in earlier works as colossal optical nonlinearity … Web25 de jul. de 2024 · Optical metasurfaces are arrays of optical antennas, with sub-wavelength size and separation. They represent an original concept of flat optics with no classical analogs. They allow for the... earth b\\u0026w

Metasurface-bounded open cavities supporting virtual ... - PubMed

Web14 de jan. de 2016 · Germanium-antimony-tellurium (GST) is a PCM that has amorphous and crystalline phases with distinct properties, is bistable and nonvolatile, and undergoes a reliable and reproducible phase transition in response to an optical or electrical stimulus; GST may have applications in tunable photonic devices and optoelectronic circuits. 99 PDF Web12 de mai. de 2024 · Numerous ways of actively modulating the optical properties of metasurfaces were reported, including phase-change materials 5, 6, mechanical tuning 7, 8, liquid-crystal-based tuning 9, and all ... Web11 de abr. de 2024 · 2 optical structures in organisms for enhancing optical signals Luminescence exists in a series of organisms, such as marine organisms, plants, and insects. [ 35 - 38 ] Analysis and interpretation of these fluorescent signals can provide information about their physiological state, how species communicate with each other, … earth broth healthforce

Open Optical Cavities based on Metasurfaces Capasso Group

WebMay 1 2014. An optical cavity, or an optical resonator, may be described as an arrangement of mirrors that produce a standing light wave resonator. Optical cavities, … WebCavities based on metasurfaces a reflective metasurface and a mirror or two reflective meta- The results presented in [2] were obtained with a laser diode surfaces. They can … earth brokenWeb11 de jun. de 2024 · Optical phased arrays (OPAs) are essential optical elements in applications that require the ability to manipulate the light-wavefront, such as beam … c t electrical workington

"Web8 de abr. de 2024 · A number of line energies were chosen based on results previously published by the authors [7] to deliberately tailor distinct surface features in pursuance of drawing a better outline on the effect of surface irregularities on the fatigue behavior of AlSi7Mg alloy obtained by L-PBF. 2.2 Laser Shock Peening (LSP) Once the cubic … " - Open optical cavities based on metasurfaces

Open optical cavities based on metasurfaces

Metasurfaces: Advanced Optical Materials - Wiley Online Library

Web9 de mai. de 2014 · Strong optical nonlinearities have been the foundation of many applications in classical and quantum optics. Recently, the burgeoning field of high-Q nonlinear micro- and nano-cavities [] has emerged as a new chip-scalable platform for photonic information processing, which requires very low energies [2–4] and can be … WebWhile previous tunable metasurfaces were based mainly on tuning of dielectric permittivity or losses in associated tunable elements, here we propose gain-assisted tunable metasurfaces as optical modulators with high ON–OFF ratio. They consist of a dye-doped film placed within metal-insulator-metal (MIM) cavities.

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WebA metasurface is an artificial nanostructured interface that has subwavelength thickness and that manipulates light by spatially arranged meta-atoms—fundamental building blocks of the metasurface. Web5 de jul. de 2024 · Metamaterials offer bespoke electromagnetic applications and novel properties which are not found in naturally occurring materials. However, owing to their 3D-nature and resonant characteristics,...

Web9 de abr. de 2024 · Therefore, achieving both fast and large phase tuning becomes particularly challenging. Here, we address this issue by employing optical metasurfaces … Web9 de abr. de 2024 · Therefore, achieving both fast and large phase tuning becomes particularly challenging. Here, we address this issue by employing optical metasurfaces of high-quality factor (high-Q) resonances. However, a full 2π phase modulation in such metasurfaces is generally accompanied by undesirable amplitude changes, which need …

WebWe generalize the concept of open optical cavity using one or more reflective metasurfaces instead of two curved mirrors. We provide a simple mathematical … Web20 de set. de 2024 · In this paper, multiple Fano resonances preferred in the refractive index sensing area are achieved based on sub-wavelength metal-insulator-metal (MIM) waveguides. Two slot cavities, which are placed between or above the MIM waveguides, can support the bright modes or the dark modes, respectively. Owing to the mode …

Web29 de jan. de 2024 · The optical metasurface is termed as 2D metamaterials that inherent all of the properties of metamaterials and also provide a solution to the limitation of the conventional metamaterials.

WebCavity optomechanics is a branch of physics which focuses on the interaction between light and mechanical objects on low-energy scales. It is a cross field of optics, quantum … ct election statusWebIn principle, electrically gated phase and amplitude control allows for electrical addressability of individual metasurface elements and opens the path to applications in ultrathin optical components for imaging and sensing technologies, such as reconfigurable beam steering devices, dynamic holograms, tunable ultrathin lenses, nanoprojectors, and … earth brown hex colorWeb1 de mai. de 2024 · In this frame, we have recently proposed metasurface based systems able to store electromagnetic energy in resonant cavities [129] - [131]. This is achieved … ct electronics colorado springsWeb7 de abr. de 2024 · The advent of metasurfaces, namely, engineered surfaces comprising a spatial arrangement of subwavelength unit structures or meta-atoms, gave rise to a new concept of flat optics owing to their ability to control … ct electric mini lightsWebI am pleased to announce that a PhD position is available at the Italian Institute of Technology (Genova, Italy) in my research group. Topic: Engineering… ct election winnersWeb7 de abr. de 2024 · However, most of these metasurfaces are passive type optical devices and, once fabricated, their optical properties cannot be changed. To construct … ct electric rate hikeWeb10 de abr. de 2024 · ABSTRACT. Spectral sensing is an emerging field driven by the need for fast and non-invasive methods for the chemical analysis of materials in agri-food, healthcare, and industrial applications. We demonstrate a near-infrared spectral sensor, based on a scalable fabrication process and combining high responsivity, narrow … ct electric buses