Results 1 to 10 of about 221,369 (265)

Efficient retrieval of a single excitation stored in an atomic ensemble

Optics Express, 2006
We report significant improvements in the retrieval efficiency of a single excitation stored in an atomic ensemble and in the subsequent generation of strongly correlated pairs of photons. A 50% probability to transform the stored excitation into one photon in a well-defined spatio-temporal mode at the output of the ensemble is demonstrated.
Laurat, Julien, de Riedmatten, Hughes, Felinto, Daniel, Chou, Chin-Wen, Schomburg, Erik W., Kimble, H. Jeff   +5 more
openaire   +4 more sources

Comparative VUV Synchrotron Excitation Study of YAG: Eu and YAG: Cr Ceramics

Crystals
Using synchrotron radiation, a comparative VUV excitation study of YAG ceramics doped with Eu3+ and Cr3+ ions under VUV excitation (10.5–3.7 eV) at 9 K was conducted in this work.
Amangeldy M. Zhunusbekov, Zhakyp T. Karipbayev, Akbota Tolegenova, Kuat K. Kumarbekov, Erik E. Nurmoldin, Muratbek M. Baizhumanov, Aleksei Kotlov, Anatoli I. Popov   +7 more
doaj   +1 more source

Effects of intermediary reservoir in a two-stage impedance pump

MATEC Web of Conferences, 2017
Impedance pump is a simple valve-less pumping mechanism, which transport fluid through the mismatch of impedance in the system. A typical open-loop impedance pump consists of an elastic tube, connected to rigid tubing, where the rigid section is ...
Lee V. C.-C., Chong J.-C
doaj   +1 more source

A Review on the Control of Magnetless Inductive Rotary Transformer-Based Excitation Systems

IEEE Access
Magnetless rotary transformer excitation systems enable fully brushless operation of electrically excited synchronous machines (EESMs) and offer a scalable alternative to permanent-magnet drives.
Saleh Abdusalam Ali, Farshid Mahmouditabar, Volker Pickert, Shafiq Odhano, Muhammad Rizwan Awan, Zepeng Liu   +5 more
doaj   +1 more source

On the selection of excitation signals for the fast spectroscopy of electrical bioimpedance

Journal of Electrical Bioimpedance, 2018
Different excitation signals are applicable in the wideband impedance spectroscopy in general. However, in electrical bioimpedance (EBI) measurements, there are limitations that set specific demands on the properties of the excitation signals. This paper
Ojarand Jaan, Min Mart
doaj   +1 more source

Photothermal excitation efficiency enhancement of cantilevers by electron beam deposition of amorphous carbon thin films. [PDF]

Sci Rep, 2020
Penedo M, Yurtsever A, Miyazawa K, Furusho H, Ishii KA, Fukuma T.   +5 more
europepmc   +1 more source

Quantum efficiency of yttrium and terbium garnets

Moldavian Journal of the Physical Sciences, 2006
A measurement system and mathematical procedure are developed for determining the quantum efficiency of luminescent materials. This technique based on standard photoluminescence DARSA PSI 5100 system (Diode Array Rapid Scan Analysis, Professional ...
Nazarov, Mihail
doaj  

Improved Approach Based on Meander Line Coil Electromagnetic Acoustic Transducers for A0 Wave Enhancement

Transactions of Nanjing University of Aeronautics and Astronautics
In traditional meander line coil electromagnetic acoustic transducer （MLC-EMAT） structures， the bias magnetic field is usually set to be along the normal direction of plate surface.
LYU Zongmin, GUAN Wei, ZHANG Yinghong, QIAN Zhenghua   +3 more
doaj   +1 more source

Analysis of the external network parameters influence on the operating characteristics of self-excited induction generators

Electrical engineering & Electromechanics
Introduction. Self-excited induction generators (SEIGs) play a vital role in renewable energy systems, particularly in remote regions. However, their performance is highly sensitive to excitation capacitance, rotor speed and load variations, making ...
A. Dilmi, A. Bouzida, N. Yassa, B. Fares
doaj   +1 more source

An efficiently excited Eu3+ luminescent site formed in Eu,O-codoped GaN

AIP Advances
For the development of III-nitride-semiconductor-based monolithic micro-light-emitting diode (LED) displays, Eu,O-codoped GaN (GaN:Eu,O) is a promising material candidate for the red LEDs.
Takenori Iwaya, Shuhei Ichikawa, Volkmar Dierolf, Brandon Mitchell, Hayley Austin, Dolf Timmerman, Jun Tatebayashi, Yasufumi Fujiwara   +7 more
doaj   +1 more source