Results 241 to 250 of about 2,043,473 (299)

Longitudinal live-cell chemical imaging using coherent Raman scattering microscopy.

Analyst
Zhang C, Ma S, Zhou M, Lukov LL, Zafarjafarzadeh N.   +4 more
europepmc   +1 more source

Numerical Study of Surface Plasmon Enhanced Nonlinear Absorption and Refraction [PDF]

Optics Express, 2008
Maxwell Garnett effective medium theory is used to study the influence of silver nanoparticle induced field enhancement on the nonlinear response of a Kerr-type nonlinear host.
Pieter G Kik
exaly   +2 more sources

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Nonlinear absorption of methylprednisolone by absorptive and secretory transporters

International Journal of Pharmaceutics, 2010
The intestinal absorption rate constant of methylprednisolone (MP) evaluated by the loop method increased significantly with increasingly higher concentrations of the drug up to 500 microM in a nonlinear fashion but did not increase further at higher concentrations.
Mikio, Tomita, Atsuko, Watanabe, Ikue, Fujinaga, Tomoko, Yamakawa, Masahiro, Hayashi   +4 more
openaire   +2 more sources

Nonlinear absorption and nonlinear refraction in HgCdTe

SPIE Proceedings, 1990
The large third order susceptibility of Hg1_CdTe makes it a very promising material for many applications, including optical switching. There have been numerous studies' 4) ofthe optical nonlinearities of Hg1_CdTe and it is well known that for values ofx near 0.2 and for 10.6 ,tm radiation, both nonlinear absorption arising from two photon absorption ...
Shekhar Guha, Stephen P. Buchner, Keith Kang, C. Freter, Wen P. Chen   +4 more
openaire   +1 more source

Nonlinear absorptions of cryptocyanine

Chemical Physics Letters, 1979
Abstract The ground-and excited-state absorption of cryptocyanine/methanol at 815, 685, 550, 430, and 310 nm is measured as a function of the photon flux density of a simultaneously exciting Q-switched ruby laser pulse. In the same way the absorption is investigated at 694 nm — but in this case with a delay of 50 ns as compared with the excitation ...
R. Menzel, D. Leupold
openaire   +1 more source

Single-shot measurement of nonlinear absorption and nonlinear refraction

Applied Optics, 2006
A single-shot method for measurement of nonlinear optical absorption and refraction is described and analyzed. A spatial intensity variation of an elliptical Gaussian beam in conjugation with an array detector is the key element of this method. The advantages of this single-shot technique were demonstrated by measuring the two-photon absorption and ...
J, Jayabalan, Asha, Singh, Shrikant M, Oak   +2 more
openaire   +2 more sources

Nonlinear Diffusion with Absorption

Potential Analysis, 1997
The author studies the problem \[ u- \text{div }a(\cdot, \text{grad }u)+ \partial j(\cdot, u)\ni f\quad\text{on }\Omega,\quad u|_{\partial\Omega}= 0,\leqno E(j,f) \] where \(j:\Omega\times \mathbb{R}\to[0,\infty)\) is convex l.s.c. in \(r\in\mathbb{R}\) with \(j(\cdot,0)= 0\) [the absorption term is \(\partial j\) as subgradient of \(j\)].
openaire   +3 more sources