Metamaterials with Tailored Nonlinear Optical Response

Husu, Hannu; Siikanen, Roope; Mäkitalo, Jouni; Lehtolahti, Joonas; Laukkanen, Janne; Kuittinen, Markku; Kauranen, Martti

doi:10.1021/nl203524k

Cited by 154 publications

(131 citation statements)

References 28 publications

Supporting

Mentioning

130

Contrasting

Order By: Relevance

“…The latter in particular is interesting for boosting nonlinear optical effects at the nanoscale [8][9][10]. Hence, in recent years scientists searched for different complex plasmonic nanostructure geometries, such as dipole and bow-tie nanoantennas [11][12][13][14], T-or L-shaped structures [15][16][17][18], split-ring-resonators [19][20][21][22], plasmonic oligomers [23,24], and hybrid dielectric plasmonic nanostructures [25][26][27], to boost second-harmonic or third-harmonic (TH) generation. In these nonlinear optical effects, two or three incoming photons are combined and upconverted to one outgoing photon at two or three times the incoming energy, respectively.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear optics of complex plasmonic structures: linear and third-order optical response of orthogonally coupled metallic nanoantennas

et al. 2016

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Nonlinear optics of complex plasmonic structures: linear and third-order optical response of orthogonally coupled metallic nanoantennas

et al. 2016

View full text Add to dashboard Cite

“…2 When the particles are arranged in arrays, the overall response is also affected by the coupling between the individual particles. [3][4][5][6] An important consequence of LSPRs is the strong enhancement of the local electromagnetic fields ("hot spots"), which can boost nonlinear optical effects in nanostructures. 7,8 One of the nonlinear effects that can be enhanced is second-harmonic generation (SHG), which converts two photons at a fundamental frequency into one photon at the doubled frequency.…”

mentioning

confidence: 99%

Second-Harmonic Generation from Metal Nanoparticles: Resonance Enhancement versus Particle Geometry

et al. 2014

Self Cite

View full text Add to dashboard Cite

We demonstrate that optical second-harmonic generation (SHG) from arrays of noncentrosymmetric gold nanoparticles depends essentially on particle geometry. We prepare nanoparticles with different geometrical shapes (L and T) but similar wavelengths for the polarization-dependent plasmon resonances. In contrast to recent interpretations emphasizing resonances at the fundamental frequency, the T shape leads to stronger SHG when only one, instead of both, polarization component of the fundamental field is resonant. This is explained by the character of plasmon oscillations supported by the two shapes. Our numerical simulations for both linear and second-order responses display unprecedented agreement with measurements.

show abstract

“…A periodic arrangement of centrosymmetric nanoparticles offers one route to enhanced nonlinear signals [14]. Creating non-centrosymmetric systems of parBrought to you by | MIT Libraries Authenticated Download Date | 5/11/18 12:30 PM ticles with a center of inversion symmetry yields even greater harmonic conversion efficiencies [15]. The need for efficient nanostructured harmonic generators then drives the search for new plasmonic geometries with higher harmonic generation efficiencies in spite of low material volumes.…”

mentioning

confidence: 99%

Efficient forward second-harmonic generation from planar archimedean nanospirals

et al. 2015

View full text Add to dashboard Cite

Abstract:The enhanced electric field at plasmonic resonances in nanoscale antennas can lead to efficient harmonic generation, especially when the plasmonic geometry is asymmetric on either inter-particle or intra-particle levels. The planar Archimedean nanospiral offers a unique geometrical asymmetry for second-harmonic generation (SHG) because the SHG results neither from arranging centrosymmetric nanoparticles in asymmetric groupings, nor from non-centrosymmetric nanoparticles that retain a local axis of symmetry. Here, we report forward SHG from planar arrays of Archimedean nanospirals using 15 fs pulses from a Ti:sapphire oscillator tuned to 800 nm wavelength. The measured harmonic-generation efficiencies are 2.6·10 −9 , 8·10 −9 and 1.3·10 −8 for left-handed circular, linear, and right-handed circular polarizations, respectively. The uncoated nanospirals are stable under average power loading of as much as 300 µW per nanoparticle. The nanospirals also exhibit selective conversion between polarization states. These experiments show that the intrinsic asymmetry of the nanospirals results in a highly efficient, two-dimensional harmonic generator that can be incorporated into metasurface optics.Keywords: nonlinear plasmonics, asymmetric nanoparticles, polarization conversion, metasurfaces, near-field enhancement, Archimedean nanospirals The second-order susceptibility governs a host of important nonlinear optical phenomena, including frequency mixing, sum-frequency and harmonic generation, and optical rectification. In crystalline and molecular materials, second-order nonlinearities are nonvanishing only at surfaces or in materials with a noncentrosymmetric crystal structure; moreover, the efficient generation of a second-order nonlinear effect requires that the fundamental incident and the nonlinear outgoing waves be phase matched through a macroscopic volume of material, typically on the order of cubic millimeters [1].Plasmonic nanostructures and nanostructure arrays also exhibit second-order nonlinearities, and can generate forward second harmonics if their geometries are not centrosymmetric. Such structures are inherently planar, and therefore compatible with thin-film optical and optoelectronic technologies and with metasurface optics. With advances in nanofabrication, the symmetry of the structures can be exquisitely controlled at the level of a few nanometers [2]. Combining these effects with ultrafast, high-intensity laser pulses yields massive electricfield enhancements and correspondingly greater secondharmonic yield. The localized surface plasmon resonance enhances efficiency and can be designed by selecting the nanoparticle shape for a given wavelength; selective polarization response can also be designed into the nanoparticle. A number of asymmetric plasmonic geometries have been used for harmonic generation, including L-and V-shaped nanoparticles, nanocups, and asymmetric trimers [3][4][5][6][7]. Larger plasmonic structures-such as the ratchet wheel-have also been shown to affect the polarization o...

show abstract

Metamaterials with Tailored Nonlinear Optical Response

Cited by 154 publications

References 28 publications

Nonlinear optics of complex plasmonic structures: linear and third-order optical response of orthogonally coupled metallic nanoantennas

Nonlinear optics of complex plasmonic structures: linear and third-order optical response of orthogonally coupled metallic nanoantennas

Second-Harmonic Generation from Metal Nanoparticles: Resonance Enhancement versus Particle Geometry

Efficient forward second-harmonic generation from planar archimedean nanospirals

Contact Info

Product

Resources

About