Open AccessIon-Beam-Synthesized Colloidal Silver Nanoclusters in Crystalline Sapphire as Third-Order Optical Material
Author(s) -
Anna Kozakiewicz,
Binita Ghosh,
Purushottam Chakraborty,
Trevor Derry,
S. R. Naidoo,
Paul Franklyn
Publication year - 2012
Publication title -
ieee photonics journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.725
H-Index - 73
eISSN - 1943-0655
pISSN - 1943-0647
DOI - 10.1109/jphot.2011.2182508
Subject(s) - engineered materials, dielectrics and plasmas , photonics and electrooptics
Silver ion implantation in single-crystalline sapphire has given rise to the formation of silver nanoparticle-sapphire composites, which have been imaged using transmission electron microscopy, and confirmed using linear optical absorption and Rutherford backscattering spectrometry. Nonlinear refractive index and two-photon absorption of these nanocomposites have been observed using Z-scan and Anti-resonant Interferometric Nonlinear Spectroscopy (ARINS) in the close proximity of surface plasmon resonance (SPR) wavelength of silver nanoclusters (~400 nm) and at ~807 nm, respectively. Both sign and value of the nonlinear parameters were determined, and the third-order optical susceptibility (χ(3)) of the composites has been found to be significant. Such metal nanocomposites in glasses and sapphires having appreciable χ(3) with temporal responses in picosecond to femtosecond time domain have great relevance to futuristic switching materials in nanophotonics.