نتایج جستجو برای: second harmonic generation

تعداد نتایج: 968743  

Journal: :Optics Express 2021

We designed, fabricated and tested gallium phosphide (GaP) nano-waveguides for second harmonic generation (SHG). demonstrate SHG in the visible range around 655 nm using low power continuous-wave pump optical communication O-band. Our structures utilize modal phase matching, such that lower order eigenmodes of are matched to higher harmonic. observe different combinations interacting modes by v...

2015
Venkatram Nalla Raghavender Medishetty Yue Wang Zhaozhi Bai Handong Sun Ji. Wei Jagadese J. Vittal

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. In the current work we observed SHG from a Zn(II) complex which was originally thought to have crystallized in the centrosymmetric space group C2/c. This has been attributed to the unequal antiparallel packing of the metal ...

2016
Roderick B. Davidson Anna Yanchenko Jed I. Ziegler Sergey M. Avanesyan Benjamin J. Lawrie Richard F. Haglund

Efficient frequency conversion techniques are crucial to the development of plasmonic metasurfaces for information processing and signal modulation. In principle, nanoscale electric-field confinement in nonlinear materials enables higher harmonic conversion efficiencies per unit volume than those attainable in bulk materials. Here we demonstrate efficient second-harmonic generation (SHG) in a s...

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