Yang li of tsinghua university will discuss how they designed and fabricated an onchip integrated metamaterial with a refractive index of zero in the optical regime, opening the door to exploring the physics of light propagation in zeroindex media. Osa onchip alldielectric fabricationtolerant zeroindex. Metamaterials that exhibit a negative value for the refractive index are often referred to by any of several terminologies. In our work, we exploit the ubiquity and fabrication precision of silicon photonics to demonstrate multiple platforms of alldielectric integrated metamaterials with a refractive index near zero. Yang li of tsinghua university will discuss how they designed and fabricated an on chip integrated metamaterial with a refractive index of zero in the optical regime, opening the door to exploring the physics of light propagation in zero index media. Zeroindex metamaterials zims offer unprecedented ways to manipulate the flow of light, and are of interest for wide range of applications including optical cloaking, supercoupling, and unconventional phasematching properties in nonlinear optics.
Broadband enhancement of onchip singlephoton extraction via. We present an onchip diraccone metamaterial with an impedancematched zero refractive index at. They have developed the first on chip metamaterial with a refractive index of zero, meaning that the phase of light can travel infinitely fast. Abstract metamaterials with a refractive index of zero exhibit physical properties such as infinite phase velocity and wavelength. Onchip zeroindex metamaterials request pdf researchgate.
Pdf ultralowloss onchip zeroindex materials researchgate. Onchip alldielectric fabricationtolerant zeroindex. Applied physics magnetically controlled zeroindex metamaterials based on ferrite. Zero index metamaterials zims offer unprecedented ways to manipulate the flow of light, and are of interest for wide range of applications including optical. Negativeindex metamaterial or negativeindex material nim is a metamaterial whose refractive index for an electromagnetic wave has a negative value over some frequency range nims are constructed of periodic basic parts called unit cells, which are usually significantly smaller than the wavelength of the externally applied electromagnetic radiation. Orad reshef nanophotonics, metamaterials and nonlinear optics. Light goes infinitely fast with new on chip zero index metamaterial nanowerk news electrons are so 20th century. Photonic crystals, metamaterials, nanophotonics and. Zeroindex metamaterials open new possibilities for. Enz metamaterials have a permittivity 1 near zeroandapermeabilitymofunity,resultinginanearzerorefractive index n m1 v.
Integrated supercouplers based on zeroindex metamaterials. Paulson school of engineering and applied sciences, harvard university, 9 oxford st. Li, yang, shota kita, philip munoz, orad reshef, daryl i. Schematic diagram of an ultralowloss on chip zero index phc slab based on a bound state in the continuum bic. Day, 2 eric mazur, 1,3 and marko loncar 1, 1john a.
Direct observation of phasefree propagation in a silicon. Feb 06, 2020 antireflection coatings of zero index metamaterials zims are proposed for maximum absorption of light in solar cells. Because a signal propagating in a zeroindex metamaterial will stimulate a spatially static field structure that varies in time. Onchip alldielectric fabricationtolerant zeroindex metamaterials shota kita, 1 yang li, 1 philip camaydmunoz, 1 orad reshef, 1 daryl i. Metamaterials with a refractive index of zero exhibit physical properties such as infinite phase velocity and wavelength. The split ring resonator acts as an artificial magnetic dipole. One class of metamaterials, with a refraction index of zero pdf, was first created in 20 and quickly caught. Nonlinear phasematching in 2d integrated zeroindex metamaterials is awarded nkt photonics best student paper award mrs optical metamaterials, boston, ma 2015. Vulis1, mei yin1,2,markoloncar1 and eric mazur1,3 metamaterials with a refractive index of zero exhibit physical properties such as in. Zeroindex media are an interesting class of metamaterials formed by structures with index of refraction equal to zero at the frequency of interest. Metamaterials with a refractive index of zero exhibit properties that are important for integrated optics.
Zeroindex metamaterials zims offer unprecedented ways to manipulate the flow of light, and are of interest for wide range of applications including optical cloaking, supercoupling, and. Onchip zeroindex metamaterials, nature photonics, doi. Pdf design of matched zeroindex metamaterials using. Li, metamaterials composed of threedimensional periodic arrays of two different magnetodielectric spheres arbitrarily arranged on a simple tetragonal lattice, 10th international symposium on photonic and electromagnetic crystal structures pecsx, santa fe, new mexico, jun. Yang li, shota kita, philip munoz, orad reshef, daryl i vulis, mei yin, marko loncar, and eric mazur.
Pdf onchip zeroindex metamaterials semantic scholar. Sep 01, 2019 alldielectric zeroindex metamaterials based on mie resonances provide a new route to developing novel metamaterials with low loss. We reduce losses in zero index, onchip photonic crystals by introducing. Zeroindex metamaterials zims offer unprecedented ways to manipulate the flow of light, and are of interest for wide range of applications including optical. Materials with a refractive index of zero have been considered as strong contenders for such supercoupling applications. Most metamaterial experiments occur in bulk transmission geometries. The gap between inner and outer ring acts as a capacitor while the rings themselves act as an inductor, resulting in an lc. We designed and fabricated an onchip integrated metamaterial with a refractive index of zero. In the 21st century, photonic devices, which use light to transport large amounts of information quickly, will enhance or even replace the electronic devices that are ubiquitous in our lives today. Propagation in and scattering from a matched metamaterial having a zero index of refraction, phys. Schematic diagram of an ultralowloss onchip zeroindex phc slab.
Oct 23, 2015 solution could bring about significant advancements for a range of technologies, ranging from photonic devices to quantum computing, and more researchers at harvards john a. Impedancematched zims can be obtained through a photonic diraccone pdc dispersion induced by an accidental degeneracy of an electric monopole. Zeroindex metamaterial based alldielectric nanoantenna. These waveguides have smaller footprints and exhibit improved energy transfer capabilities as compared to previous optical waveguides that support phaseadvancefree modes. Lowloss nearzeroindex metamaterial based on a single. Onchip zeroindex metamaterials yang li1, shota kita1, philip munoz1, orad reshef1, daryl i. Antireflection coatings of zeroindex metamaterial for solar.
Here researchers demonstrate integrated inplane zero index metamaterials. Senior researcher, ntt basic research labs cited by 1,216. Lowloss nearzeroindex metamaterial based on a single board. Shota kita, yang li, philip munoz, orad reshef, daryl i. Antireflection coatings of zeroindex metamaterial for. The outer surface of a zim layer is planar, and the inner surface has periodic corrugations in order for the incident light to pass through but block the.
We reduce losses in zeroindex, onchip photonic crystals by introducing. However, the alldielectric zeroindex metamaterial can be obtained at. Zeroindex materials, metamaterials, silicon photonics link pdf onchip alldielectric fabricationtolerant zeroindex metamaterials. Shota kita, yang li, philip camaydmunoz, orad reshef, daryl i. We present metamaterial as a lefthanded material which follows left hand rule. Mar 12, 2019 a zero refractive index medium is the one in which electromagnetic waves do not undergo any change in phase. Onchip alldielectric fabricationtolerant zero index. Paulson school of engineering and applied sciences seas say they have made it easier to manipulate light at the nanoscale. Impedancematched zims can be obtained through a photonic diraccone pdc dispersion induced by an accidental degeneracy of two linear bands.
At the infrared and optical frequencies, some lowloss semiconductors and dielectrics such as silicon carbide sic may already have permittivity near zero, and are examples of zeroindex. Zeroindex, metamaterial, nanoscale materials brief. In this webinar hosted by the osa photonic detection technical group, prof. Other terms for nims include lefthanded media, media with a negative refractive index, and backwardwave media. One class of metamaterials, with a refraction index of zero pdf. The design is a square array of air holes in 220nm silicononinsulator soi which offers compatibility with complementary metaloxidesemiconductor cmos technology. In this zeroindex material made of silicon pillar arrays. A thin layer of a zim is shown to help trap light inside a solar cell.
Pdf light travels in a zeroindex medium without accumulating a spatial phase, resulting in perfect spatial coherence. Onchip alldielectric fabricationtolerant zeroindex metamaterials. Request pdf onchip zero index metamaterials metamaterials with a refractive index of zero exhibit physical properties such as infinite. Metamaterials are under consideration for many applications. Negativeindex metamaterials nim are characterized by a negative index of refraction. Oct 19, 2015 onchip zeroindex metamaterials yang li1, shota kita1, philip munoz1, orad reshef1, daryl i. J15 jinze he and yang li, design of onchip midir frequency comb with ultralow power pump in nearir, opt.
We investigated the optical properties of a nearzero index metamaterial and demonstrate that it displays angularly selective transmission. Light goes infinitely fast with new onchip zeroindex. In 2007, one researcher stated that for metamaterial applications to be realized, energy loss must be reduced, materials must be extended into threedimensional isotropic materials and production techniques must be industrialized. Orad reshef nanophotonics, metamaterials and nonlinear. Request pdf onchip zeroindex metamaterials metamaterials with a refractive index of zero exhibit physical properties such as infinite phase velocity and wavelength. Controlling graphene plasmons with a zeroindex metasurface.
Tunneling of electromagnetic energy through subwavelength channels and bends using. Interest in metamaterials has grown in past years due to the fact that these manmade materials can be constructed such that their opti. Li, metamaterials composed of threedimensional periodic arrays of two different magnetodielectric spheres arbitrarily arranged on a simple tetragonal lattice, 10th international symposium on photonic and electromagnetic crystal structures. Daryl inna vulis sensing hardware engineer optical. Broadband enhancement of onchip singlephoton extraction. We measure the effective refractive index using onchip interferometry and observe a zerocrossing around a wavelength of. Nims where the negative index of refraction arises from simultaneously negative permittivity and negative permeability are also known as double negative metamaterials or double negative. Realization of an alldielectric zeroindex optical metamaterial.
In this article, a highly directive alldielectric zero index metamaterial zim based nanoantenna. Zeroindex has only been achieved recently in an integrated platform through a diraccone dispersion, enabling some of these more exciting applications in an integrated platform. Pdf nearzeroindex materials for photonics researchgate. Onchip zeroindex metamaterials laboratory for nanoscale. New onchip material has a refractive index of zero, meaning. Paulson school of engineering and applied sciences have announced the first onchip metamaterial with a refractive index of zero meaning the.
Geometryinvariant effects in structures with nearzero permittivity or permeability could lead to deformable optical devices, and to new insights into unique lightmatter interactions. Dec 06, 2016 onchip alldielectric fabricationtolerant zeroindex metamaterials. However, there is no way to implement these materials on a photonic chip, restricting the investigation and application of zeroindex phenomena to simple shapes and small scales. Subdiffraction imaging,9 invisibility cloaks,10 chemical and biomolecular sensing,11, 12 communication and information processing figure 1. Onchip zeroindex metamaterials nature photonics 2015 a simple twodimensional model system to study electrostaticselfassembly soft matter august 8, 2012 from the abstract. Zeroindex metamaterials can be used to achieve high directivity antennas. Zero index metamaterials have been recently demonstrated in both outof plane 5 and onchip configurations 6 by taking advantage of a photonic. Onchip zero index metamaterials, at iadvanced laser applications workshop, korea institue of machinery and materials daejeon, south korea, friday, august 28, 2015.
Pdf onchip alldielectric fabricationtolerant zeroindex. This geometry would permit integrating these metamaterials with other optical elements, including waveguides, resonators, and interferometers. Manipulating the flow of light using diraccone zeroindex. Optical characterization of zeroindex metamaterials. Manipulating the flow of light using diraccone zeroindex metamaterials di vulis, o reshef, p camaydmunoz, e mazur reports on progress in physics 82 1, 012001, 2018.
Realization of zerorefractiveindex lens with ultralow. New onchip material has a refractive index of zero. Onchip alldielectric fabricationtolerant zero index metamaterials. Onchip alldielectric fabricationtolerant zeroindex metamaterials citation. Day, 2 eric mazur, 1,3 and marko lon car 1, 1 john a. Zeroindex metamaterials open new possibilities for optical chips.
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