Zobrazeno 1 - 10
of 104
pro vyhledávání: '"Robert L. Armstrong"'
Autor:
Viktor A. Podolskiy, Vladimir P. Drachev, Eldar Khaliullin, V. P. Safonov, Robert L. Armstrong, Nikolai Zakovryashin, Vladimir M. Shalaev, W. Kim
Publikováno v:
Journal of Modern Optics. 49:645-662
A novel class of composites for optics, microcavities doped with metal fractal aggregates, is studied. Lasing and broad-band Stokes and anti-Stokes emission from (Ag colloidal aggregates)/(adsorbed molecules)/(micro-cavity) composite at low-intensity
Autor:
V. P. Safonov, W. Kim, J. G. Zhu, R. A. Zuhr, C. W. White, Robert L. Armstrong, Vladimir M. Shalaev, N.N. Lepeshkin
Publikováno v:
Journal of Nonlinear Optical Physics & Materials. :191-210
Nonlinear optical properties of metal-dielectric composites, such as fractal colloid aggregates and clusters created by ion implantation, are studied. Strong fluctuations of local fields result in huge enhancements of optical nonlinearities in fracta
Autor:
Andrey K. Sarychev, W. Kim, Vladimir M. Shalaev, Robert L. Armstrong, V. A. Shubin, V. P. Safonov
Publikováno v:
Journal of Lightwave Technology. 17:2183-2190
Combined action of a resonant cavity and metal nanocomposites is shown to result in dramatic enhancement of spontaneous emisson rate in the optical spectral range. The cavity leads to modification of the optical density of states (Parcell effect), wh
Autor:
W. Kim, S. G. Rautian, V. P. Safonov, N.N. Lepeshkin, Vadim A. Markel, Vladimir M. Shalaev, Yu.E. Danilova, Robert L. Armstrong
Publikováno v:
Physical Review Letters. 80:1102-1105
Publikováno v:
Physical Review B. 53:2425-2436
Strong fluctuations of local fields may result in very large optical nonlinearities in small-particle composites. Enhancement associated with particle clustering is found for a number of optical processes, including four-wave mixing (FWM), third-harm
Publikováno v:
Applied optics. 31(12)
Suppression of morphology-dependent resonances of the light elastically scattered by a laser-illuminated, micrometer-sized droplet is reported. A single nonabsorbing droplet is levitated by using an electrodynamic quadrupole trap, and the scattered l
Autor:
Bae-Sig Park, Robert L. Armstrong
Publikováno v:
Applied optics. 28(17)
The heating of a laser-irradiated droplet is analyzed theoretically and numerically by solving the heat transport equation. Two regimes of droplet heating are considered, slow and fast heating. In the slow heating regime, the thermal diffusion term p
Publikováno v:
Applied optics. 27(12)
Plasma spectra initiated on single, optically levitated, micron-sized droplets of a glycerine-saturated brine solution are presented. The temporal development of the droplet plasma is monitored by observing neutral and once-ionized carbon and neutral
Autor:
Robert L. Armstrong
Publikováno v:
Applied optics. 21(12)
A theoretical description of line mixing in the Q branch of an infrared rotation-vibration band is obtained in the weak coupling approximation. The description is applied to the case of the nu(2) band of CO(2) near 667 cm(-1). Theoretical absorption
Autor:
Robert L. Armstrong
Publikováno v:
Applied optics. 17(13)
Errors introduced by line parameter variations into atmospheric transmittance calculations in which the absorption line shape is assumed to be described accurately by the Galatry profile are compared with errors introduced by the use of approximate l