Results 101 to 110 of about 275,683 (312)
Merging of optoelectronic techniques for microwave signal generation [PDF]
, 2007 This paper describes some recent evolutions about optical generation of microwave signals. Among these, multiloop ring oscillator and harmonic generation allow both rise in frequency and wide tunability. Besides, using microresonators and optical sources
Le Kernec, Arnaud +5 more
core +1 more source
Multipolar second harmonic generation in a symmetric nonlinear metamaterial
Scientific Reports, 2017 Optical nonlinearities are intimately related to the spatial symmetry of the nonlinear media. For example, the second order susceptibility vanishes for centrosymmetric materials under the dipole approximation.
Omri Wolf +3 more
doaj +1 more source
Arthritis Care &Research, EarlyView.Systemic sclerosis (SSc) is a rare autoimmune disease defined by immune dysregulation, vasculopathy, and progressive fibrosis of the skin and internal organs. Despite advances in care, major complications such as interstitial lung disease (ILD) and myocardial involvement remain the leading causes of morbidity and mortality.
Cristiana Sieiro Santos +2 more
wiley +1 more source
Experimentation of Entangled photon-pairs generation using an ultrafast source at gigahertz [PDF]
, 2013 In this dissertation we will present the experimental study of polarization entangled photon pairs generation, through spontaneous parametric down conversion (SPDC) using an ultrafast source at gigahertz.
Bloise, Eduardo
core
Immunosuppressive Drug Use in Limited Systemic Sclerosis: An International Survey
Arthritis Care &Research, EarlyView.Objective Current guidelines recommend immunosuppressive treatment for diffuse cutaneous systemic sclerosis but are less clear on their use in limited cutaneous systemic sclerosis (lcSSc) in the absence of internal organ complications. We conducted an international survey to understand current immunosuppressive drug prescribing patterns in lcSSc ...
Sabrina Hoa +3 more
wiley +1 more source
Electric Field Effect on Optical Second-harmonic Generation of Amphoteric Megamolecule Aggregates [PDF]
, 2017 We have detected second-order nonlinear optical response from an amphoteric mega-saccharides named sacran undera needle/ring electrode stimulus by using an optical second harmonic generation (SHG) microscope.
Goro Mizutani +15 more
core +1 more source
Second-harmonic generation within a random fiber laser
High Power Laser Science and EngineeringOptical fibers offer convenient access to a variety of nonlinear phenomena. However, due to their inversion symmetry, second-order nonlinear effects, such as second-harmonic generation (SHG), are challenging to achieve.
Yousi Yang +8 more
doaj +1 more source
Second-harmonic generation in GaS crystals
Solid State Communications, 1997 Abstract Second-harmonic generation in the layered semiconductor GaS excited with the wavelength λ = 1579 nm is investigated with the Maker fringe technique. It is shown that the second-harmonic signal originates from domains in the crystal, which consist of the noncentrosymmetric C53v polytype.
Allakhverdiev, K +3 more
openaire +2 more sources
International Journal of Adaptive Control and Signal Processing, EarlyView.This article proposes a convergent adaptive observer for a damped wave PDE and an infinite‐dimensional ODE coupled in cascade using sampled‐in‐space ODE state measurements. The proposed observer estimates the distributed states of the PDE and ODE along with unknown PDE parameters and spatial input.
Zehor Belkhatir +2 more
wiley +1 more source
Infrared-Based Third and Second Harmonic Generation Imaging of Cornea
, 2011 The cornea functions as an optical lens and plays an important role in vision. For corneal diagnosis and treatment such as refractive surgery, a microscopic imaging system with a 3-D cellular resolution and retinal safety is strongly desired.
CHEN, SZU-YU;YU, HAN-CHIEH;WANG, I- JONG;SUN, CHI-KUANG +1 more
core +1 more source