Results 71 to 80 of about 20,626 (216)

Nonlinear Optical studies of the Transient Coherence in the Quantum Hall System

, 2006
We review recent investigations of the femtosecond non-linear optical response of the two-dimensional electron gas (2DEG) in a strong magnetic field. We probe the Quantum Hall (QH) regime for filling factors $\nu \sim 1$.
Axt, Axt, Axt, Axt, Axt, Bartels, Boller, Chakraborty, Chemla, Chemla, D.S. Chemla, Donovan, E.G. Kavousanaki, Eisenstein, Ferrio, Fertig, Fromer, Fromer, Fromer, Fromer, Haug, Hirjibehedin, I.E. Perakis, Igarashi, Igarashi, J. Tignon, K.M. Dani, Kallin, Kapetanakis, Karathanos, Louie, MacDonald, Mueller, Oji, Perakis, Perakis, Perakis, Perakis, Perakis, Perakis, Perakis, Pinczuk, Pinczuk, Rossi, Ruckenstein, Ruckenstein, Schueller, Schäfer, Shah, Shahbazyan, Sham, Stormer, Wegener, Yoshioka, Zibrov, Östreich   +55 more
core   +2 more sources

Incident Lung Cancer and Mortality: Data From Health ABC Using Periodontal Status and Tooth Loss

Oral Diseases, EarlyView.
ABSTRACT Aim To evaluate whether periodontal parameters and tooth loss are associated with lung cancer incidence and mortality among older adults. Materials and Methods Data are from the Health, Aging and Body Composition (Health ABC) study, which included 1136 older adults who received a periodontal examination and were followed for up to 16 years ...
Taciane Menezes da Silveira, Eleanor M. Simonsick, Juliana Balbinot Hilgert, Fernando Neves Hugo, Francisco Wilker Mustafa Gomes Muniz, Natália Marcumini Pola   +5 more
wiley   +1 more source

Low-error and broadband microwave frequency measurement in a silicon chip

, 2015
Instantaneous frequency measurement (IFM) of microwave signals is a fundamental functionality for applications ranging from electronic warfare to biomedical technology.
Aalto, Timo, Casas-Bedoya, Alvaro, Eggleton, Benjamin J., Harjanne, Mikko, Kapulainen, Markku, Marpaung, David, Morrison, Blair, Pagani, Mattia, Zhang, Yanbing   +8 more
core   +1 more source

From single particle to superfuid excitations in a dissipative polariton gas [PDF]

, 2011
Using angle-resolved heterodyne four-wave-mixing technique, we probe the low momentum excitation spectrum of a coherent polariton gas. The experimental results are well captured by the Bogoliubov transformation which describes the transition from single ...
B. Deveaud-Plédran, L. Pitaevskii, M. Richard, M. T. Portella-Oberli, M. Wouters, N. N. Bogoliubov, V. Kohnle, Y. Léger   +7 more
core   +5 more sources

Inter‐Individual Differences in T1, T2, and Proton Density Using Quantitative Synthetic Imaging for 1H‐MRS Quantification

Magnetic Resonance in Medicine, Volume 95, Issue 5, Page 2489-2499, May 2026.
ABSTRACT Purpose Metabolite concentrations can be determined from proton magnetic resonance spectroscopy (1H‐MRS) data using water as an internal reference. This calculation requires tissue‐specific water T1 and T2 relaxation constants and proton density (PD).
Samantha A. Leech, Sarah L. Manske, Paul G. Mullins, Tiffany K. Bell, Ashley D. Harris   +4 more
wiley   +1 more source

Performance analysis of nonlinear crosstalk of WDM systems using modulation schemes criteria

Open Engineering
Nonlinearities in optical fibers are regarded as the most significant barriers that endanger the effectiveness of the optical transmission system and pose a threat to communication quality.
Mohammed Nidhal Abd, Mansoor Riyadh, Abd Haider J., Fadhil Hilal A.   +3 more
doaj   +1 more source

Biomimicry of the Hawk Moth, Manduca sexta (L.), Produces an Improved Flapping-Wing Mechanism

Biomimetics, 2020
Flapping-wing micro air vehicles (FWMAVs) that mimic the flight capabilities of insects have been sought for decades. Core to the vehicle’s flight capabilities is the mechanism that drives the wings to produce thrust and lift.
Kenneth Moses, Mark Willis, Roger Quinn
doaj   +1 more source

Observation of inter-Landau-level quantum coherence in semiconductor quantum wells

, 2008
Using three-pulse four-wave-mixing femtosecond spectroscopy, we excite a non-radiative coherence between the discrete Landau levels of an undoped quantum well and study its dynamics.
D. S. Chemla, E. G. Kavousanaki, I. A. Cotoros, I. E. Perakis, J. Tignon, J. Wang, K. M. Dani, W. Schäfer   +7 more
core   +1 more source

Study of interwell carrier transport by terahertz four-wave mixing in an optical amplifier with tensile and compressively strained quantum wells [PDF]

, 1994
Interwell carrier transport in a semiconductor optical amplifier having a structure of alternating tensile and compressively strained quantum wells was studied by four-wave mixing at detuning frequencies up to 1 THz.
Miller, Barry I., Newkirk, Michael A., Park, Namkyoo, Vahala, Kerry J., Zhou, Jianhui   +4 more
core   +1 more source

Enhancement and Speed‐Up of Carrier Dynamics in A Dielectric Nanocavity with Deep Sub‐Wavelength Confinement

Laser &Photonics Reviews, Volume 20, Issue 7, 6 April 2026.
This work presents the first experimental investigation of ultrafast dynamics in dielectric bowtie nanocavities, featuring deep‐subwavelength mode confinement. Measurements reveal enhanced two‐photon absorption, sub‐picosecond carrier relaxation, and strong pump–probe interactions, demonstrating clear advantages over conventional nanocavities for low ...
Gaoneng Dong, Ali Nawaz Babar, Rasmus Ellebæk Christiansen, Søren Engelberth Hansen, Søren Stobbe, Yi Yu, Jesper Mørk   +6 more
wiley   +1 more source