Optical recording media using laser-induced size reduction of Au nanoparticles

Sugiyama, Masakazu; Inasawa, Susumu; Koda, Seiichiro; Hirose, Tomohiro; Yonekawa, T.; Omatsu, Takashige; Takami, Akinori

doi:10.1063/1.1399309

Cited by 46 publications

(43 citation statements)

References 17 publications

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“…1-3 reveals that all calculated curves are divided into three groups depending on the wavelength used: 1) λ = 308, 355, and 400 nm; • (c) and its wavelength is 308 (1), 355 (2), 400 (3), 527 (4), 532 (5), 800 (6), and 1064 (7) nm. The left scale is for curves (1)(2)(3)(4)(5), and right scale is for curves (6,7) 2) λ = 527 and 532 nm; 3) λ = 800 and 1064 nm. There are very broad absorption maximums (K max abs ≈ 2.7 at β = 0…”

Section: Methods Results and Discussionmentioning

confidence: 99%

Computer modeling of optical properties of gold ellipsoidal nanoparticles at laser radiation wavelengths

Pustovalov¹,

Babenko

2004

Laser Phys. Lett.

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Processes of laser interaction with metal (gold) nanoparticles are of great interest for laser applications in nanotechnology, engineering, and medicine. Optical properties of nanoparticles determine photophysical and photochemical processes during laser treatment. Computer calculation of efficiency factors of absorption, scattering and extinction of radiation by ellipsoidal gold nanoparticles (two-dimensional ellipsoids of revolution) with small semiaxes in the range 5-100 nm, for some values of aspect ratio and angle of orientation of ellipsoid with respect to direction of laser radiation propagation and for some laser wavelengths is performed. The estimation of absorbed and scattered laser radiation energy by gold ellipsoidal nanoparticles, their maximal temperatures and comparison with experimental data is made. Efficiency factor of absorption for the prolate Au ellipsoid embedded into water versus the ellipsoid small semiaxis r b

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Section: Methods Results and Discussionmentioning

confidence: 99%

Computer modeling of optical properties of gold ellipsoidal nanoparticles at laser radiation wavelengths

Pustovalov¹,

Babenko

2004

Laser Phys. Lett.

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“…It could be interesting to extend these investigations to radially-polarized beams, which achieve a tighter focus [41,42]. These results might find application in areas like NP spectroscopy [43,44], optical data storage [45,46] and optical forces [47].…”

Section: Discussionmentioning

confidence: 99%

Plasmon spectra of nanospheres under a tightly focused beam

2008

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We study the modification of the far-field cross sections and the near-field enhancement for gold and silver nanospheres illuminated by a tightly focused beam. Using a multipole-expansion approach we obtain an analytical solution to the scattering problem and provide insight on the effects of focusing on the optical response. Large differences with respect to Mie theory are found especially when the nanoparticle supports quadrupole or higher-order resonances. * Electronic address: mario.agio@phys.chem.ethz.ch 1 arXiv:0711.3649v1 [physics.optics]

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“…A wide variety of applications have been suggested that include magneto-optic effects in thin films [1], optical recording medium [2], sensitizers in erbium doped fibers [3], fast nonlinear optical materials [4], enhanced nonlinear response for layered composite materials [5] and nanoparticle enhanced photoconductors [6]. While some proposed device structures require spatial and particle size control, others are less stringent on their requirements.…”

Section: Introductionmentioning

confidence: 99%