Results 11 to 20 of about 46,423 (207)

Polarization-independent wavelength conversion at 2.5 Gb/s by dual-pump four-wave mixing in a strained semiconductor optical amplifier [PDF]

open access: yes, 1996
We give a general expression for the polarization dependence of the four-wave mixing (FWM) efficiency in the dual-pump configuration. This expression, along with some general properties of the FWM susceptibility tensor, is used to propose a simple scheme
Geraghty, David F.   +4 more
core   +1 more source

Intensity dependences of the nonlinear optical excitation of plasmons in graphene [PDF]

open access: yes, 2017
Recently, we demonstrated an all-optical coupling scheme for plasmons, which takes advantage of the intrinsic nonlinear optical response of graphene.
Chang, D. E.   +3 more
core   +2 more sources

Dynamic modal analysis of monolithic mode-locked semiconductor lasers [PDF]

open access: yes, 2003
We analyze the advantages and applicability limits of the mode-coupling approach to active, passive, hybrid, and harmonic mode-locking in diode lasers. A simple, computationally efficient numerical model is proposed and applied to several traditional and
Arnold, J.M.   +2 more
core   +1 more source

Four-wave mixing mediated by the capture of carriers in semiconductor quantum-well amplifiers [PDF]

open access: yes, 1998
We demonstrate a technique to measure the intrinsic capture lifetime, using frequency-resolved four wave mixing (FWM). The work is based on a frequency-domain measurement of the response function associated with the transfer of a modulation from three ...
Hunziker, Guido   +3 more
core   +1 more source

Passively mode-locked semiconductor lasers and their applications [PDF]

open access: yes, 2008
In this paper we present some characterizations of passively mode-locked semiconductor lasers. These lasers are multimode and they exhibit a modulation of their output power even though they are DC-biased.
Landais, Pascal   +2 more
core   +1 more source

Design and characterization of optical-THz phase-matched traveling-wave photomixers [PDF]

open access: yes, 1999
Design and characterization of optical-THz phase-matched traveling-wave photomixers for difference-frequency generation of THz waves are presented.
Blake, Geoffrey A.   +6 more
core   +1 more source

Self-pulsation dynamics in narrow stripe semiconductor lasers [PDF]

open access: yes, 2006
In this paper, we address the physical origin of self-pulsation in narrow stripe edge emitting semiconductor lasers. We present both experimental time-averaged polarization-resolved near-field measurements performed with a charged-coupled device camera ...
Elsaer, W.   +4 more
core   +1 more source

Dielectric Barrier Discharge Plasma Deoxidation of Natively Oxide Layer of Copper Powders in a Fluidized Bed

open access: yesAdvanced Engineering Materials, EarlyView.
This paper presents a novel approach to reducing oxide layers on metal powders using low‐temperature hydrogen dielectric barrier discharge plasmas at atmospheric pressure. Unlike conventional hydrogen‐plasma reductions, the powders do not contact the plasma directly.
Shukang Zhang   +3 more
wiley   +1 more source

Numerical Modeling of Tank Cars Carrying Hazardous Materials With and Without Composite Metal Foam

open access: yesAdvanced Engineering Materials, EarlyView.
Large‐scale puncture models consisting of hazardous materials (HAZMATs) tank car with protective steel–steel composite metal foam (S–S CMF) are solved numerically. Tank car plate with added 10.91–13.33 mm thick S–S CMF layer does not puncture. Protective S–S CMF absorbs impact energy, reduces plate deformation, and prevents shear bands formation ...
Aman Kaushik, Afsaneh Rabiei
wiley   +1 more source

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

open access: yesAdvanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

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