Optical characterization of thermal lens effect in ethanol and the influence of focusing lens and liquid cell size

MH Mahdieh, MA Jafarabadi - Optics & Laser Technology, 2012 - Elsevier
A high power cw laser beam propagating in an absorbing medium spreads, distorted or
deflected as a result of thermally self-induced refractive index gradients. In this paper, optical …

Enhancement of nonlinear optical properties of BaTiO3 nanoparticles by the addition of silver seeds

BG Yust, N Razavi, F Pedraza, Z Elliott, AT Tsin… - Optics express, 2012 - opg.optica.org
Barium titanate (BaTiO_3) is a technologically important material because of its nonlinear
properties, such as its strong second harmonic generation and high third order susceptibility …

Generalizing the Z-scan theory for nonlocal nonlinear media

MR RashidianVaziri, F Hajiesmaeilbaigi… - Journal of …, 2012 - iopscience.iop.org
Abstract The basic Sheik-Bahae formalism has been extended to include the possibility of
nonlocal response of samples in Z-scan experiments. This is made possible by introducing a …

Effect of concentration on the plasmonic absorption and optical nonlinearity of gold nanoparticles

M Rashidian, D Dorranian - Optical Engineering, 2012 - spiedigitallibrary.org
The effect of concentration on the optical nonlinearity of gold nanoparticles is investigated.
Gold nanoparticles were synthesized by nanosecond-pulsed laser ablation of a high-purity …

Tricritical-like behavior of the nonlinear optical refraction at the nematic-isotropic transition in the E7 thermotropic liquid crystal

VM Lenart, SL Gómez, IH Bechtold… - The European Physical …, 2012 - Springer
We use Z-scan technique to investigate the nonlinear optical response of the thermotropic
liquid crystal E7 in the neighborhood of the nematic-isotropic phase transition. The analysis …

Threshold-tunable optical limiters of Au nanoparticles in castor oil

H Aleali, L Sarkhosh, R Karimzadeh… - Journal of Nonlinear …, 2012 - World Scientific
Optical limiting performance of gold nanoparticles (AuNPs) in castor oil is studied using a
low power laser irradiation at 532 nm. Our results suggest that it is possible to tune the …

Nonlinear optical characterization of ionics liquids of 1-methylpyrrolidine family

M Trejo-Duran, E Alvarado-Mendez… - Photonics North …, 2012 - spiedigitallibrary.org
Research nonlinear optical properties of the materials for the fabrication of opto-electronic
devices have growth in the last years. Ionics liquids present nonlinear optical properties. In …

Optical nonlinearities and thermal lens effect of a-Si: H films investigated by Z-scan technique

DHG Espinosa, RK Onmori - Physics Procedia, 2012 - Elsevier
Nonlinear optical effects have been studied in hydrogenated amorphous silicon films
through the single beam Z-scan technique using a modulated CW laser in the millisecond …

[PDF][PDF] Optical limiting properties of colloids enhanced by gold nanoparticles based on thermal nonlinear refraction

M Eslamifara, N Mansour - Int. J. Opt. Photonics, 2012 - ijop.ir
In this work, thermo-optical properties of gold nanoparticle colloids are studied using
continuous wave (CW) laser irradiation at 532 nm. The nanoparticle colloids are fabricated …

Optical limiting behavior of bromophenol blue and its dependence on pH

FZ Henari, A Al-Saie, KG Culligan - Journal of Nonlinear Optical …, 2012 - World Scientific
The nonlinear properties and optical limiting performance of Bromophenol indicator solution
were investigated using continuous wave laser beam at 488 nm and 514 nm. A z-scan …