Silicon nanowire/polymer membrane for infrared visualization via third-harmonic generation

Abstract Nonlinear harmonic generation in nanostructures is one of the key topics in nanophotonics, as it allows infrared-to-visible light conversion at the nanoscale.his work reports on the efficient third-harmonic generation in a free-standing Si nanowire array encapsulated into a polymer membrane. High nonlinearity of Si material X 31112.45 ≈ 10 –19m2 /V 2 and light coupling with optical resonances in the nanowires yield a strong third-harmonic signal and efficient infrared (1200 — 2000nm) to visible (400 — 666nm) upconversion. The fabricated membranes demonstrate high flexibility and semitransparency, which makes them convenient to use as visualizers.

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Effect of UV-Irradiation and ZnO Nanoparticles on Nonlinear Optical Response of Specific Photochromic Polymers

Nanomaterials ◽

10.3390/nano11020492 ◽

2021 ◽

Vol 11 (2) ◽

pp. 492

Author(s):

Karolina Waszkowska ◽

Tarek Chtouki ◽

Oksana Krupka ◽

Vitaliy Smokal ◽

Viviana Figà ◽

...

Keyword(s):

Harmonic Generation ◽

Uv Irradiation ◽

Zno Nanoparticles ◽

Nonlinear Optical ◽

Second Harmonic ◽

Theoretical Calculations ◽

Harmonic Signal ◽

Third Harmonic Generation ◽

Laser Source ◽

Third Harmonic

A series of methacrylic styrylquinoline polymers have been synthesized and characterized by spectroscopic and nonlinear optical (NLO) investigations. The NLO properties of studied polymer compounds in the form of thin films prepared by a spin coating method have been investigated by means of second and third harmonic generation via Maker fringe setup with a laser source at 1064 nm and a pulse duration of 30 ps. The results show strong second harmonic signal dependence on polarization configurations. This second harmonic generation (SHG) response was enhanced by UV-irradiation at 366 nm and doping by ZnO nanoparticles (NPs) (100 nm), while the opposite effect was achieved for a third harmonic generation experiment. Thus, values of second and third order nonlinear susceptibilities were determined by theoretical calculations based on comparative models. The remarkable NLO results presented in this paper expose potential optoelectronic and photonic applications.

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Photon lifetime correlated increase of Raman scattering and third-harmonic generation in silicon nanowire arrays

Laser Physics Letters ◽

10.1088/1612-2011/13/3/035902 ◽

2016 ◽

Vol 13 (3) ◽

pp. 035902 ◽

Cited By ~ 3

Author(s):

S V Zabotnov ◽

M M Kholodov ◽

V A Georgobiani ◽

D E Presnov ◽

L A Golovan ◽

...

Keyword(s):

Raman Scattering ◽

Harmonic Generation ◽

Silicon Nanowire ◽

Third Harmonic Generation ◽

Nanowire Arrays ◽

Third Harmonic ◽

Silicon Nanowire Arrays

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Enhanced Third Harmonic Generation in Ultrathin Free-standing β-Ga2O3 Nanomembranes: Study on Surface and Bulk Contribution

Nanoscale ◽

10.1039/d1nr06259j ◽

2021 ◽

Author(s):

Young-Jin KIM ◽

Gao Yi ◽

Sangheon Jeon ◽

Young Woo Kwon ◽

Jongkyoon Park ◽

...

Keyword(s):

Harmonic Generation ◽

Third Harmonic Generation ◽

Free Standing ◽

Third Harmonic ◽

Interface Characterization ◽

Surface And Interface ◽

Light Manipulation ◽

Bio Imaging ◽

Wavelength Light ◽

Sub Wavelength

Third harmonic generation (THG) has proven its value in surface and interface characterization, high-contrast bio-imaging, and sub-wavelength light manipulation. Although THG is observed widely in general solid and liquid substances,...

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Ultrafast Third-Order Nonlinear Optical Response Excited by fs Laser Pulses at 1550 nm in GaN Crystals

Materials ◽

10.3390/ma14123194 ◽

2021 ◽

Vol 14 (12) ◽

pp. 3194

Author(s):

Adrian Petris ◽

Petronela Gheorghe ◽

Tudor Braniste ◽

Ion Tiginyanu

Keyword(s):

Harmonic Generation ◽

Nonlinear Optical ◽

Laser Pulses ◽

Third Harmonic Generation ◽

High Repetition Rate ◽

Third Order ◽

Third Harmonic ◽

The Third ◽

High Repetition ◽

Gan Crystal

The ultrafast third-order optical nonlinearity of c-plane GaN crystal, excited by ultrashort (fs) high-repetition-rate laser pulses at 1550 nm, wavelength important for optical communications, is investigated for the first time by optical third-harmonic generation in non-phase-matching conditions. As the thermo-optic effect that can arise in the sample by cumulative thermal effects induced by high-repetition-rate laser pulses cannot be responsible for the third-harmonic generation, the ultrafast nonlinear optical effect of solely electronic origin is the only one involved in this process. The third-order nonlinear optical susceptibility of GaN crystal responsible for the third-harmonic generation process, an important indicative parameter for the potential use of this material in ultrafast photonic functionalities, is determined.

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