Results 21 to 30 of about 10,962,229 (302)

Magic Frequencies for Cesium Primary-Frequency Standard [PDF]

open access: yesPhysical Review Letters, 2008
4 pages, 2 ...
Flambaum, V. V.   +2 more
openaire   +3 more sources

Single-cycle all-fiber frequency comb

open access: yesAPL Photonics, 2021
Single-cycle pulses with a deterministic carrier-envelope phase enable the study and control of light–matter interactions at the sub-cycle timescale, as well as the efficient generation of low-noise multi-octave frequency combs.
Sida Xing   +6 more
doaj   +1 more source

High Frequency Audiometry [PDF]

open access: yesAnnals of Otology, Rhinology & Laryngology, 1984
After a brief discussion of the past use of and clinical need for high frequency hearing tests, a new technique is described that uses a special electric transduction mode: a 60-kHz carrier frequency is modulated by the desired audiofrequency. The combined signal is applied to the skin over the mastoids by Mylar-covered electrodes.
J, Tonndorf, B, Kurman
openaire   +2 more sources

Calibration to Mitigate Near-Field Antennas Effects for a MIMO Radar Imaging System

open access: yesSensors, 2021
A calibration method for a high-resolution hybrid MIMO turntable radar imaging system is presented. A line of small metal spheres is employed as a test pattern in the calibration process to measure the position shift caused by undesired antenna effects ...
Ha Hoang   +3 more
doaj   +1 more source

Efforts towards a low-temperature-sensitive physics package for vapor cell atomic clocks

open access: yesSatellite Navigation, 2020
Strong environmental dependence is an intractable problem for vapor cell clocks, for which the high-temperature sensitivity of the physics package is considered one of the dominant reasons.
Qiang Hao   +5 more
doaj   +1 more source

Generation of time-frequency grid state with integrated biphoton frequency combs

open access: yes, 2020
Encoding quantum information in continuous variables is intrinsically faulty. Nevertheless, redundant qubits can be used for error correction, as proposed by Gottesman, Kitaev and Preskill in Phys. Rev. A \textbf{64} 012310, (2001).
Amanti, M. I.   +10 more
core   +3 more sources

Broadband 1-GHz mid-infrared frequency comb

open access: yesLight: Science & Applications, 2022
Mid-infrared (MIR) spectrometers are invaluable tools for molecular fingerprinting and hyper-spectral imaging. Among the available spectroscopic approaches, GHz MIR dual-comb absorption spectrometers have the potential to simultaneously combine the high ...
Nazanin Hoghooghi   +6 more
doaj   +1 more source

Point spread function decoupling in computational fluorescence microscopy

open access: yesLight: Science & Applications
Computational fluorescence microscopy constantly breaks through imaging performance through advanced optical modulation technologies; however, conventional theoretical modeling and experimental measurement approaches are challenging to meet the demand ...
Ziwei Wang   +8 more
doaj   +1 more source

Photon Frequency Mode Matching using Acousto-Optic Frequency Beam Splitters [PDF]

open access: yes, 2005
It is a difficult engineering task to create distinct solid state single photon sources which nonetheless emit photons at the same frequency. It is also hard to create entangled photon pairs from quantum dots.
A. Yariv, Nick S. Jones, T. M. Stace
core   +2 more sources

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen   +23 more
wiley   +1 more source

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