Integrated Zero Index Metamaterials

Extreme optics with zero-index and flat-band metamaterials, at AP483 Optics & Electronics Seminar, Stanford University, Monday, February 1, 2021:
Nanotechnology has enabled the development of nanostructured composite materials (metamaterials) with exotic optical properties not found in nature. In the most extreme case, we can create materials which support light waves that propagate with infinite phase velocity, corresponding to a refractive index of zero. We have developed a variety of in-plane metamaterial designs that permit obtaining a refractive index of zero in the optical regime. We will report on some of the exotic physics of zero-index metamaterials, including strong enhancement of nonlinear optical phenomena, and on flat-... Read more about Extreme optics with zero-index and flat-band metamaterials
The surprising world of zero-index materials, at Wednesday Night Research Seminar, Harvard University, Cambridge, MA, Wednesday, September 23, 2020:

VIDEO OF PRESENTATION

 

Nanotechnology has enabled the development of nanostructured composite materials (metamaterials) with exotic optical properties not found in nature. In the most extreme case, we can create materials which support light waves that propagate with infinite phase velocity, corresponding to a refractive index of zero. This zero index can only be achieved by simultaneously controlling the electric and magnetic resonances...

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Extreme optics with zero-index metamaterials, at PQE 2020, Snowbird, UT, Tuesday, January 7, 2020:
Nanotechnology has enabled the development of nanostructured composite materials (metamaterials) with exotic optical properties not found in nature. In the most extreme case, we can create materials which support light waves that propagate with infinite phase velocity, corresponding to a refractive index of zero. We have developed a variety of in-plane metamaterial designs that permit obtaining a refractive index of zero in the optical regime. We will report on some of the exotic physics of zero-index metamaterials, including strong enhancement of nonlinear optical phenomena
Zero-index waveguides for metasurface applications, at 2015 MRS Fall Meeting (Boston, Massachusetts), Wednesday, December 2, 2015:
Metamaterials with a refractive index of zero have emerged as a new tool for phase control in nanophotonics. Waves propagate within such metamaterials with infinite phase velocity, resulting in uniform phase throughout. Recently two-dimensional zero-index metamaterials have been integrated with on-chip silicon photonics, allowing for phase-free propagation over large areas. However, zero-index modes are inherently lossy: since the momentum of the wave is zero, it lies above the light line, and therefore couples to waves in free space. In particular, momentum conservation implies that the... Read more about Zero-index waveguides for metasurface applications
Breakthroughs in nanophotonics, at Nanyang Technological University (Singapore), Wednesday, August 24, 2016:
Nanotechnology has enabled the development of nanostructured composite materials (metamaterials) with exotic optical properties not found in nature. In the most extreme case, we can create materials which support light waves that propagate with infinite phase velocity, corresponding to a refractive index of zero. This zero index can only be achieved by simultaneously controlling the electric and magnetic resonances of the nanostructure. We present an in-plane metamaterial design consisting of silicon pillar arrays, embedded within a polymer matrix and sandwiched between gold layers. Using an... Read more about Breakthroughs in nanophotonics
2D impedance-matched zero-index metamaterial, at SPIE Photonics West: Photonic and Phononic Properties of Engineered Nanostructures IV (San Francisco, California), Wednesday, February 5, 2014
Recent efforts to achieve metamaterials with a vanishing refractive index take advantage of the low index at a photonic band edge. This behavior is accompanied by a divergent impedance, resulting in inefficient transmission. We investigate the nature of this discontinuity and show that it can be removed by tuning the electric and magnetic response of the metamaterial. We present a design for a 2D zero-index metamaterial based on this concept. The metamaterial is entirely dielectric, which results in low-loss transmission at the design wavelength of 1.55um. This behavior is confirmed using... Read more about 2D impedance-matched zero-index metamaterial
Less is More: Extreme Optics with Zero Refractive Index, at Robert Resnick Lecture, Rensselaer Polytechnic Institute (Troy, NY), Wednesday, March 2, 2016:
Nanotechnology has enabled the development of nanostructured composite materials (metamaterials) with exotic optical properties not found in nature. In the most extreme case, we can create materials which support propagating light waves that have infinite phase velocity, corresponding to a refractive index of zero. This zero index can only be achieved by simultaneously controlling the electric and magnetic resonances of the nanostructure. We present an in-plane metamaterial design consisting of silicon pillar arrays, embedded within a polymer matrix and sandwiched between gold layers. Using... Read more about Less is More: Extreme Optics with Zero Refractive Index
Less is More: Extreme Optics with Zero Refractive Index, at CLEO/Europe EQEC 2017 (Munich, Germany), Tuesday, June 27, 2017
By simultaneously controlling the electric and magnetic properties of a nanostructured composite material (metamaterial), we can create materials with a refractive index of zero. We present a novel on-chip platform to explore zero-index metamaterials.
Less is More: Extreme Optics with Zero Refractive Index, at Sichuan University (Chengdu, China), Saturday, December 19, 2015:
Nanotechnology has enabled the development of nanostructured composite materials (metamaterials) with exotic optical properties not found in nature. In the most extreme case, we can create materials which support light waves that propagate with infinite phase velocity, corresponding to a refractive index of zero. This zero index can only be achieved by simultaneously controlling the electric and magnetic resonances of the nanostructure. We present an in-plane metamaterial design consisting of silicon pillar arrays, embedded within a polymer matrix and sandwiched between gold layers. Using an... Read more about Less is More: Extreme Optics with Zero Refractive Index
Less is More: A New Class of Optics with Zero Refractive Index for the Applications in Nanophotonics, Nonlinear Optics, and Quanum Entanglement, at William Mong Distinguished lecture (Hong Kong, China), Friday, March 24, 2017:
Nanotechnology has enabled the development of nanostructured composite materials (metamaterials) with exotic optical properties not found in nature. In the most extreme case, we can create materials which support light waves that propagate with infinite phase velocity, corresponding to a refractive index of zero. This zero index can only be achieved by simultaneously controlling the electric and magnetic resonances of the nanostructure. We present an in-plane metamaterial design consisting of silicon pillar arrays, embedded within a polymer matrix and sandwiched between gold layers. Using an... Read more about Less is More: A New Class of Optics with Zero Refractive Index for the Applications in Nanophotonics, Nonlinear Optics, and Quanum Entanglement
Less is More: Extreme Optics with Zero Refractive Index, at Physics Colloquium, Brown Univeristy (Providence, RI), Monday, September 28, 2015:
Nanotechnology has enabled the development of nanostructured composite materials (metamaterials) with exotic optical properties not found in nature. In the most extreme case, we can create materials which support light waves that propagate with infinite phase velocity, corresponding to a refractive index of zero. This zero index can only be achieved by simultaneously controlling the electric and magnetic resonances of the nanostructure. We present an in-plane metamaterial design consisting of silicon pillar arrays, embedded within a polymer matrix and sandwiched between gold layers. Using an... Read more about Less is More: Extreme Optics with Zero Refractive Index
Less is More: Extreme Optics with Zero Refractive Index, at Physics Colloquium, Washington State University (Pullman, WA), Thursday, March 24, 2016:
Nanotechnology has enabled the development of nanostructured composite materials (metamaterials) with exotic optical properties not found in nature. In the most extreme case, we can create materials which support propagating light waves that have infinite phase velocity, corresponding to a refractive index of zero. This zero index can only be achieved by simultaneously controlling the electric and magnetic resonances of the nanostructure. We present an in-plane metamaterial design consisting of silicon pillar arrays, embedded within a polymer matrix and sandwiched between gold layers. Using... Read more about Less is More: Extreme Optics with Zero Refractive Index
Less is More: Extreme Optics with Zero Refractive Index, at Faculty of Physics Pontificia Universidad Católica de Chile (Santiago, Chile), Tuesday, January 12, 2016:
Nanotechnology has enabled the development of nanostructured composite materials (metamaterials) with exotic optical properties not found in nature. In the most extreme case, we can create materials which support light waves that propagate with infinite phase velocity, corresponding to a refractive index of zero. This zero index can only be achieved by simultaneously controlling the electric and magnetic resonances of the nanostructure. We present an in-plane metamaterial design consisting of silicon pillar arrays, embedded within a polymer matrix and sandwiched between gold layers. Using an... Read more about Less is More: Extreme Optics with Zero Refractive Index
Less is More: Extreme Optics with Zero Refractive Index, at Physics Colloquium, North Dakota State University (Fargo, ND), Wednesday, April 5, 2017
Nanotechnology has enabled the development of nanostructured composite materials (metamaterials) with exotic optical properties not found in nature. In the most extreme case, we can create materials which support light waves that propagate with infinite phase velocity, corresponding to a refractive index of zero. This zero index can only be achieved by simultaneously controlling the electric and magnetic resonances of the nanostructure. We present an in-plane metamaterial design consisting of silicon pillar arrays, embedded within a polymer matrix and sandwiched between gold layers. Using an... Read more about Less is More: Extreme Optics with Zero Refractive Index
Nonlinear optics in on-chip zero-index metamaterials, at Engineering Physics seminar, Universite de Montreal (Montreal, QC, Canada), Monday, November 23, 2015:
Optical metamaterials - composite materials whose electromagnetic properties are finely engineered by designing their constituents - have been shown to exhibit strange and exotic properties, such as negligible or negative indices of refraction and the direct control of the amplitude and phase of light. These properties have been used for innumerable applications, such as flat lenses, invisibility cloaks as well as previously unseen nonlinear interactions. Recently, our group has demonstrated the first on-chip metamaterial with a refractive index of zero. These isotropic structures exhibit a... Read more about Nonlinear optics in on-chip zero-index metamaterials

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