Results 41 to 50 of about 590,337 (295)

White-light continuum Z-scan technique for nonlinear materials characterization

open access: yesOptics Express, 2004
We present a technique for rapid characterization of degenerate nonlinear absorption and refraction spectra using a femtosecond white-light continuum (WLC) pulse to perform Z-scans. The spectral components of the WLC source are temporally and spatially dispersed to minimize nondegenerate two-photon absorption (2PA) processes.
Balu, Mihaela   +3 more
openaire   +4 more sources

Linear and nonlinear optical properties of Gd3+ doped zinc borotellurite glasses for all-optical switching applications

open access: yesResults in Physics, 2016
In this work, linear and nonlinear optical parameters of zinc borotellurite glasses doped with Gd3+ have been studied for all-optical switching applications.
C. Eevon   +5 more
doaj   +1 more source

Mobility and transverse flow visualization using phase variance contrast with spectral domain optical coherence tomography [PDF]

open access: yes, 2007
Phase variance-based motion contrast is demonstrated using two phase analysis methods in a spectral domain optical coherence tomography system. Mobility contrast is demonstrated for an intensity matched Intralipid solution placed without flow within ...
Fingler, Jeff   +3 more
core   +1 more source

Study of non-linear optical properties in automobile lubricating oil via Z-Scan technique

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2018
Non-linear optical properties were obtained as a function of laser power for the 20W-50 multigrade oil for engines. These properties were obtained by using the Z-scan technique for transmission in closed and open cell configurations.
Johan Sebastián-Díaz Tovar   +2 more
doaj   +3 more sources

Study of Nonlinear Refraction and Nonlinear Absorption Coefficients of Different CdS Film Thickness by diode laser

open access: yesمجلة بغداد للعلوم, 2013
In the present work, different thicknesses of CdS film were prepared by chemical bath deposition. Z-Scan technique was used to study the nonlinear refractive index and nonlinear absorption coefficients.
Baghdad Science Journal
doaj   +1 more source

Third-order nonlinear optical properties of the small-molecular organic semiconductor tris (8-Hydroxyquinoline) aluminum by CW Z-scan technique

open access: yesResults in Physics, 2021
The linear optical and electroluminescence properties of small molecular organic material tris-(8-hydroxyquinoline) aluminum (Alq3) are known and extensively investigated by many studies.
Abdu Saeed, Mir. A.N. Razvi, Numan Salah
doaj   +1 more source

Volumetric microvascular imaging of human retina using optical coherence tomography with a novel motion contrast technique [PDF]

open access: yes, 2009
Phase variance-based motion contrast imaging is demonstrated using a spectral domain optical coherence tomography system for the in vivo human retina. This contrast technique spatially identifies locations of motion within the retina primarily associated
Fingler, Jeff   +4 more
core   +2 more sources

Pancreas, Muscle, and Subcutaneous Fat Atrophy in Patients Undergoing Radiation for Neuroblastoma

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background/Objectives Radiation therapy (RT) is part of standard‐of‐care therapy in high‐risk neuroblastoma (HR‐NBL) but can significantly affect nearby tissue. The objectives of this study were (1) to characterize changes in pancreas volume after RT and (2) to characterize changes in body composition, including body weight percentile ...
Pradipta Debnath   +10 more
wiley   +1 more source

Direct Observationof DegenerateTwo-Photon Absorption and Its Saturation in WS2 and MoS2 Monolayer and Few-Layer Films

open access: yes, 2015
The optical nonlinearity of WS2, MoS2 monolayer and few-layer films was investigated using the Z-scan technique with femtosecond pulses from the visible to the near infrared.
Berner, Nina C.   +12 more
core   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

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