Nonlinear metasurfaces: a paradigm shift in nonlinear optics
Sign Up to like & getrecommendations! Published in 2017 at "Materials Today"
DOI: 10.1016/j.mattod.2017.06.007
Abstract: Frequency conversion processes, such as second- and third-harmonic generation, are commonly realized in nonlinear optics, offering opportunities for applications in photonics, chemistry, material science and biosensing. Given the inherently weak nonlinear response of natural materials,… read more here.
Keywords: shift nonlinear; paradigm shift; metasurfaces paradigm; optics ... See more keywords
Homogenized description and retrieval method of nonlinear metasurfaces
Sign Up to like & getrecommendations! Published in 2018 at "Optics Communications"
DOI: 10.1016/j.optcom.2017.09.048
Abstract: Abstract A patterned, plasmonic metasurface can strongly scatter incident light, functioning as an extremely low-profile lens, filter, reflector or other optical device. When the metasurface is patterned uniformly, its linear optical properties can be expressed… read more here.
Keywords: homogenization procedure; surface; method; nonlinear metasurfaces ... See more keywords
Generation of spatiotemporally tailored terahertz wavepackets by nonlinear metasurfaces
Sign Up to like & getrecommendations! Published in 2019 at "Nature Communications"
DOI: 10.1038/s41467-019-09811-9
Abstract: The past two decades have witnessed an ever-growing number of emerging applications that utilize terahertz (THz) waves, ranging from advanced biomedical imaging, through novel security applications, fast wireless communications, and new abilities to study and… read more here.
Keywords: terahertz wavepackets; generation spatiotemporally; generation; nonlinear metasurfaces ... See more keywords
Anomalous wavefront control of third-harmonic generation via graphene-based nonlinear metasurfaces in the terahertz regime.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.453700
Abstract: Freely controlling wavefronts with metasurfaces has been widely studied in linear optical systems. By constructing phase gradient meta-atoms with nonlinear responses, the wavefronts of high-harmonic fields in nonlinear metasurfaces can be arbitrarily steered by following… read more here.
Keywords: metasurfaces terahertz; nonlinear metasurfaces; terahertz regime; based nonlinear ... See more keywords
Dynamic coherent perfect absorption in nonlinear metasurfaces.
Sign Up to like & getrecommendations! Published in 2020 at "Optics letters"
DOI: 10.1364/ol.402380
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… read more here.
Keywords: absorption; perfect absorption; coherent perfect; dynamic coherent ... See more keywords
Enhancing THz emission from nonlinear metasurfaces by a Bragg perfect absorber.
Sign Up to like & getrecommendations! Published in 2023 at "Optics letters"
DOI: 10.1364/ol.489887
Abstract: Nonlinear plasmonic metasurfaces were demonstrated recently as ultracompact tetrahertz (THz) sources, emitting relatively strong single-cycle THz pulses after femtosecond laser illumination. There has been great progress in their ability to generate controlled THz wavepackets; however,… read more here.
Keywords: nonlinear metasurfaces; thz emission; emission; perfect absorber ... See more keywords