Results 51 to 60 of about 273,165 (283)

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

FEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill, Yelyzaveta Pulnova, Elke De Zitter, Helen M. Ginn, Briony A. Yorke   +4 more
wiley   +1 more source

Laser Spatial Coherence Suppression With Refractive Optical Elements Toward the Improvement of Speckle Reduction by Light Pipes

IEEE Access, 2019
We study laser speckle reduction by light pipes, and we propose a new method to improve its efficiency. Proof-of-concept refractive optical elements (ROEs) with a staircase-like structure are introduced before a holographic diffuser to split a laser beam
Zhaomin Tong, Changyuan Sun, Yifei Ma, Mei Wang, Suotang Jia, Xuyuan Chen   +5 more
doaj   +1 more source

Performance Improvement of Single-Frequency CW Laser Using a Temperature Controller Based on Machine Learning

Micromachines, 2022
The performance improvement of an all-solid-state single-frequency continuous-wave (CW) laser with high output power is presented in this paper, which is implemented by employing a temperature control system based on machine learning to control the ...
Haoming Qiao, Weina Peng, Pixian Jin, Jing Su, Huadong Lu   +4 more
doaj   +1 more source

Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma

Advanced Engineering Materials, EarlyView.
The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie, David Kramer, Thomas Scheithauer, Hans Jürgen Maier, Thomas Hassel   +4 more
wiley   +1 more source

A Multi-Pass Optically Pumped Rubidium Atomic Magnetometer with Free Induction Decay

Sensors, 2022
A free-induction-decay (FID) type optically-pumped rubidium atomic magnetometer driven by a radio-frequency (RF) magnetic field is presented in this paper.
Lulu Zhang, Yongbiao Yang, Ni Zhao, Jun He, Junmin Wang   +4 more
doaj   +1 more source

Implementing Non-Projective Measurements via Linear Optics: an Approach Based on Optimal Quantum State Discrimination

, 2006
We discuss the problem of implementing generalized measurements (POVMs) with linear optics, either based upon a static linear array or including conditional dynamics.
A. Chefles, C. W. Helstrom, J. Bergou, J. Calsamiglia, Kae Nemoto, M. A. Nielsen, Norbert Lütkenhaus, Peter van Loock, Philippe Raynal, William J. Munro   +9 more
core   +1 more source

Modeling photo-detectors in quantum optics [PDF]

, 2005
Photo-detection plays a fundamental role in experimental quantum optics and is of particular importance in the emerging field of linear optics quantum computing.
Ralph, Timothy C., Rohde, Peter P.
core   +1 more source

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

Advanced 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, Annett Wollmann, Thomas Gimpel, Alfred P. Weber   +3 more
wiley   +1 more source

Sub-attosecond-precision optical-waveform stability measurements using electro-optic sampling

Scientific Reports
The generation of laser pulses with controlled optical waveforms, and their measurement, lie at the heart of both time-domain and frequency-domain precision metrology.
Syed A. Hussain, Christina Hofer, Maximilian Högner, Wolfgang Schweinberger, Theresa Buberl, Daniel Bausch, Marinus Huber, Ferenc Krausz, Ioachim Pupeza   +8 more
doaj   +1 more source

Microfiber optomechanical torsion sensor

Frontiers in Physics, 2023
In this paper, we propose and demonstrate experimentally an optomechanical torsion sensor using a microfiber mechanical resonator. The torsion angle could be obtained by monitoring the resonant frequency shifts of the microfiber resonator.
Qiang Zhang, Qiang Zhang, Jie Zhang, Shiwei Yang, Ruili Zhai, Yuyang Xie, Yongmin Li, Yongmin Li   +7 more
doaj   +1 more source