Results 11 to 20 of about 300,028 (288)

Second harmonic generation in colloidal CdSe/CdS nanoplatelets

Results in Physics, 2020
In this Letter, we report the second harmonic generation (SHG) in a colloidal solution of CdSe/CdS nanoplatelets (NPLs) in the case of two-photon excitation in the region of exciton transition from the light holes sub-band to the conduction sub-band (549 
I.D. Laktaev, B.M. Saidzhonov, R.B. Vasiliev, A.M. Smirnov, O.V. Butov   +4 more
doaj   +1 more source

Origin of Second Harmonic Generation from individual Silicon Nanowires [PDF]

, 2016
We investigate Second Harmonic Generation from individual silicon nanowires and study the influence of resonant optical modes on the far-field nonlinear emission.
Arbouet, Arnaud, Baron, Thierry, Girard, Christian, Paillard, Vincent, Wiecha, Peter R.   +4 more
core   +3 more sources

Second harmonic generation from GaAs-Au subwavelength relief gratings

Results in Physics, 2022
We study numerically the second-harmonic generation (SHG) from subwavelength GaAs relief gratings with and without Au nano-stripes on the bottom of grating troughs.
C.J. Valencia-Caicedo, E.I. Chaikina, A.V. Khomenko   +2 more
doaj   +1 more source

Second-harmonic generation in absorptive media [PDF]

, 1994
The solution of the coupled-wave equations for second-harmonic generation in a near-resonant three-level system is extended to include absorption. It is shown, within second-order perturbation theory, that double resonance is the optimal conversion ...
Almogy, Gilad, Yariv, Amnon
core   +1 more source

Second Harmonic Generation from Phase-Engineered Metasurfaces of Nanoprisms

Micromachines, 2020
Metasurfaces of gold (Au) nanoparticles on a SiO2-Si substrate were fabricated for the enhancement of second harmonic generation (SHG) using electron beam lithography and lift-off.
Kanta Mochizuki, Mako Sugiura, Hirofumi Yogo, Stefan Lundgaard, Jingwen Hu, Soon Hock Ng, Yoshiaki Nishijima, Saulius Juodkazis, Atsushi Sugita   +8 more
doaj   +1 more source

Second harmonic generation from the `centrosymmetric' crystals

IUCrJ, 2015
Second harmonic generation (SHG) is a well known non-linear optical phenomena which can be observed only in non-centrosymmetric crystals due to non-zero hyperpolarizability.
Venkatram Nalla, Raghavender Medishetty, Yue Wang, Zhaozhi Bai, Handong Sun, Ji. Wei, Jagadese J. Vittal   +6 more
doaj   +1 more source

Vertical Second Harmonic Generation in Asymmetric Dielectric Nanoantennas

IEEE Photonics Journal, 2020
High-permittivity III–V semiconductor nanocavities have shown huge potential for enhanced nonlinear light–matter interactions at the nanoscale. In particular, Second Harmonic (SH) generation in AlGaAs nanoantennas can be extremely efficient;
Davide Rocco, Carlo Gigli, Luca Carletti, Giuseppe Marino, Maria Antonietta Vincenti, Giuseppe Leo, Costantino De Angelis   +6 more
doaj   +1 more source

Resonant plasmonic nanoparticles for multicolor second harmonic imaging [PDF]

, 2016
Nanoparticles capable of efficiently generating nonlinear optical signals, like second harmonic generation, are attracting a lot of attention as potential background-free and stable nano-probes for biological imaging.
Accanto, Nicolò, Hancu, Ion M., Hulst, Niek F. van, Piatkowski, Lukasz, Renger, Jan   +4 more
core   +2 more sources

Resonant second harmonic generation in random dielectric structures [PDF]

Journal of the European Optical Society-Rapid Publications, 2006
We show that resonant second harmonic generation can be obtained in random dielectric structures. The scheme is based on internal resonances due to the optical counterpart of Anderson localization.
Centini Marco, Felbacq Didier, Wiersma Diederick S., Sibilia Concita, Scalora Michael, Bertolotti Mario   +5 more
doaj   +1 more source

A Dynamical Model of Harmonic Generation in Centrosymmetric Semiconductors [PDF]

, 2011
We study second and third harmonic generation in centrosymmetric semiconductors at visible and UV wavelengths in bulk and cavity environments. Second harmonic generation is due to a combination of symmetry breaking, the magnetic portion of the Lorentz ...
Akozbek, N., Bloemer, M. J., de Ceglia, D., Haus, J. W., Roppo, V., Scalora, M., Vincenti, M. A.   +6 more
core   +3 more sources