Plasmonic, Low-Frequency Raman, and Nonlinear Optical-Limiting Studies in Copper-Silica Nanocomposites

Satyabrata Mohapatra; Y. K. Mishra; A. M. Warrier; Reji Philip; S. Sahoo; A. K. Arora; D. K. Avasthi

doi:10.1007/s11468-011-9271-y

Plasmonic, Low-Frequency Raman, and Nonlinear Optical-Limiting Studies in Copper-Silica Nanocomposites

Satyabrata Mohapatra^*, Y. K. Mishra, A. M. Warrier, Reji Philip, S. Sahoo, A. K. Arora, D. K. Avasthi

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

39 Citations (Scopus)

Abstract

Nanocomposite thin films consisting of Cu nanoparticles embedded in silica matrix were synthesized by atom beam co-sputtering technique. Plasmonic, optical, and structural properties of the nanocomposite films were investigated by using ultraviolet (UV)-visible absorption spectroscopy, nonlinear optical transmission, X-ray diffraction (XRD), and low-frequency Raman scattering. UV-visible absorption studies revealed the surface plasmon resonance absorption at 564 nm which showed a red shift with increase in Cu fraction. XRD results together with surface plasmon resonance absorption confirmed the presence of Cu nanoparticles of different size. Low-frequency Raman studies of nanocomposite films revealed breathing modes in Cu nanoparticles. Nanocomposites with lower metal fractions were found to behave like optical limiters. The possibility of controllably tuning the optical nonlinearity of these nanocomposites could enable them to be the potential candidates for applications in nanophotonics.

Original language	English
Pages (from-to)	25-31
Number of pages	7
Journal	Plasmonics
Volume	7
Issue number	1
DOIs	https://doi.org/10.1007/s11468-011-9271-y
Publication status	Published - Mar 2012

Keywords

Nonlinear absorption
Optical limiting
Plasmonic nanocomposites
Surface plasmon resonance

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title = "Plasmonic, Low-Frequency Raman, and Nonlinear Optical-Limiting Studies in Copper-Silica Nanocomposites",

abstract = "Nanocomposite thin films consisting of Cu nanoparticles embedded in silica matrix were synthesized by atom beam co-sputtering technique. Plasmonic, optical, and structural properties of the nanocomposite films were investigated by using ultraviolet (UV)-visible absorption spectroscopy, nonlinear optical transmission, X-ray diffraction (XRD), and low-frequency Raman scattering. UV-visible absorption studies revealed the surface plasmon resonance absorption at 564 nm which showed a red shift with increase in Cu fraction. XRD results together with surface plasmon resonance absorption confirmed the presence of Cu nanoparticles of different size. Low-frequency Raman studies of nanocomposite films revealed breathing modes in Cu nanoparticles. Nanocomposites with lower metal fractions were found to behave like optical limiters. The possibility of controllably tuning the optical nonlinearity of these nanocomposites could enable them to be the potential candidates for applications in nanophotonics.",

keywords = "Nonlinear absorption, Optical limiting, Plasmonic nanocomposites, Surface plasmon resonance",

author = "Satyabrata Mohapatra and Mishra, {Y. K.} and Warrier, {A. M.} and Reji Philip and S. Sahoo and Arora, {A. K.} and Avasthi, {D. K.}",

year = "2012",

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doi = "10.1007/s11468-011-9271-y",

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AU - Mohapatra, Satyabrata

AU - Mishra, Y. K.

AU - Warrier, A. M.

AU - Philip, Reji

AU - Sahoo, S.

AU - Arora, A. K.

AU - Avasthi, D. K.

PY - 2012/3

Y1 - 2012/3

N2 - Nanocomposite thin films consisting of Cu nanoparticles embedded in silica matrix were synthesized by atom beam co-sputtering technique. Plasmonic, optical, and structural properties of the nanocomposite films were investigated by using ultraviolet (UV)-visible absorption spectroscopy, nonlinear optical transmission, X-ray diffraction (XRD), and low-frequency Raman scattering. UV-visible absorption studies revealed the surface plasmon resonance absorption at 564 nm which showed a red shift with increase in Cu fraction. XRD results together with surface plasmon resonance absorption confirmed the presence of Cu nanoparticles of different size. Low-frequency Raman studies of nanocomposite films revealed breathing modes in Cu nanoparticles. Nanocomposites with lower metal fractions were found to behave like optical limiters. The possibility of controllably tuning the optical nonlinearity of these nanocomposites could enable them to be the potential candidates for applications in nanophotonics.

AB - Nanocomposite thin films consisting of Cu nanoparticles embedded in silica matrix were synthesized by atom beam co-sputtering technique. Plasmonic, optical, and structural properties of the nanocomposite films were investigated by using ultraviolet (UV)-visible absorption spectroscopy, nonlinear optical transmission, X-ray diffraction (XRD), and low-frequency Raman scattering. UV-visible absorption studies revealed the surface plasmon resonance absorption at 564 nm which showed a red shift with increase in Cu fraction. XRD results together with surface plasmon resonance absorption confirmed the presence of Cu nanoparticles of different size. Low-frequency Raman studies of nanocomposite films revealed breathing modes in Cu nanoparticles. Nanocomposites with lower metal fractions were found to behave like optical limiters. The possibility of controllably tuning the optical nonlinearity of these nanocomposites could enable them to be the potential candidates for applications in nanophotonics.

KW - Nonlinear absorption

KW - Optical limiting

KW - Plasmonic nanocomposites

KW - Surface plasmon resonance

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Plasmonic, Low-Frequency Raman, and Nonlinear Optical-Limiting Studies in Copper-Silica Nanocomposites

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Keywords

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