Results 111 to 120 of about 59,731 (197)

USING OF LASER-INTERFERENTIAL METHODS FOR ANALYSIS THE STRAIN-STRESS STATE OF CONCRETE SLEEPERS

Nauka ta progres transportu, 2010
The article is dealt with the results of research of the reinforced concrete element by means of the laser interferometry method.
O. H. Kesariiskyi, Yu. L. Zaiats, P. O. Pshinko   +2 more
doaj  

Calibration of Accelerometers by Shock Excitation and Laser Interferometry

Shock and Vibration, 2000
A signal processing method for determining the dynamic behavior of accelerometers by shock excitation and laser interferometry is presented. The method allows the shock sensitivity and the magnitude and phase lag of the complex sensitivity of ...
Alfred Link, Hans-Jüurgen von Martens
doaj   +1 more source

Split-And-Delay Unit for FEL Interferometry in the XUV Spectral Range

Applied Sciences, 2017
In this work we present a reflective split-and-delay unit (SDU) developed for interferometric time-resolved experiments utilizing an (extreme ultraviolet) XUV pump–XUV probe scheme with focused free-electron laser beams.
Sergey Usenko, Andreas Przystawik, Leslie Lamberto Lazzarino, Markus Alexander Jakob, Florian Jacobs, Christoph Becker, Christian Haunhorst, Detlef Kip, Tim Laarmann   +8 more
doaj   +1 more source

Faraday–Ramsey Rotation in Ultrathin Alkali Vapor Cells as an Analogy to Atomic‐Beam Systems

Laser &Photonics Reviews, EarlyView.
This work demonstrates that ultrathin rubidium vapor cells can emulate atomic‐beam behavior through geometry‐dependent velocity filtering. Employing a spatially separated pump–probe scheme and Faraday–Ramsey rotation, the study reveals coherent atomic dynamics without buffer gas or anti‐relaxation coatings. This approach offers a compact pathway toward
Mark Dikopoltsev, Eliran Talker, Yefim Barash, Noa Mazurski, Uriel Levy   +4 more
wiley   +1 more source

Polar motion and UT1: Comparison of VLBI, lunar laser, satellite laser, satellite Doppler, and conventional astrometric determinations [PDF]

Very long baseline interferometry observations made with a 3900 km baseline interferometer (Haystack Observatory in Massachusetts to Owens Valley Observation in California) were used to estimate changes in the X-component of the position of the Earth's ...
Clark, T. A., Coates, R. J., Corey, B. E., Counselman, C. C., III, Hinteregger, H. F., King, R. W., Ma, C., Robertson, D. S., Ryan, J. W., Shapiro, I. I.   +9 more
core   +1 more source

3D Surface Profiling via Direct End‐to‐End Regression With a Photonic Geometric Sensor

Laser &Photonics Reviews, EarlyView.
Measurements of microscale surface patterns are essential for quality control across semiconductor and biomedical industries, yet the development of miniaturized, intelligent systems remains constrained by the complexity and bulkiness of conventional benchtop metrology.
Ziyao Zhang, Yizhi Wang, Chunhui Yao, Huiyu Huang, Rui Ma, Xin Du, Wanlu Zhang, Zhitian Shi, Minjia Chen, Ting Yan, Liang Ming, Yuxiao Ye, Richard Penty, Qixiang Cheng   +13 more
wiley   +1 more source

Solar Plasma Noise in TianQin Laser Propagation: An Extreme Case and Statistical Analysis

The Astrophysical Journal
TianQin (TQ) proposes to detect gravitational-wave signals by using laser interferometry. However, the laser propagation effect introduces a potential noise factor for TQ.
Yanan Liu, Wei Su, Xuefeng Zhang, Jixiang Zhang, Shenwei Zhou   +4 more
doaj   +1 more source

Optical Coherence Tomography for High‐Precision Industrial Inspection in Industry 4.0: Advances, Challenges, and Future Trends

Laser &Photonics Reviews, EarlyView.
This review examines how optical coherence tomography transforms industrial inspection by delivering real‐time, micrometer‐resolution, depth‐resolved imaging. It surveys applications across display manufacturing, thin films, microelectronics, laser processing, and coatings, evaluates performance against conventional techniques, and highlights emerging ...
Nipun Shantha Kahatapitiya, Sm Abu Saleah, Daewoon Seong, Naresh Kumar Ravichandran, Sangyeob Han, Ruchire Eranga Wijesinghe, Mansik Jeon, Jeehyun Kim   +7 more
wiley   +1 more source

Quantum gates with "hot" trapped ions

, 1997
We propose a scheme to perform a fundamental two-qubit gate between two trapped ions using ideas from atom interferometry. As opposed to the scheme considered by J. I. Cirac and P. Zoller, Phys. Rev. Lett.
A. Barenco, C. Monroe, C. S. Adams, F. Diedrich, H. C. Nägerl, J. F. Poyatos, J. F. Poyatos, J. F. Poyatos, J. I. Cirac, J. I. Cirac, J. I. Cirac, M. B. Plenio, M. Weitz, N. A. Gershenfeld, P. Zoller, Q. A. Turchette, R. J. Hughes, S. J. van Enk, S. J. van Enk, X. Maitre   +19 more
core   +1 more source

Mid‐Infrared Quantum Scanning Microscopy via Visible Light Beyond Spatial Correlations

Laser &Photonics Reviews, EarlyView.
This work introduces a raster‐scanning approach based on quantum imaging with undetected light (QIUL) that probes samples in the mid‐infrared (MIR) spectral range while performing detection in the visible domain. Unlike previous QIUL implementations, this technique operates independently of photon‐pair spatial correlations and relies solely on induced ...
Josué R. León‐Torres, Vasile‐Laurențiu Dosan, Marija M. Ćurčić, Alek Lagarrigue, Frank Setzpfandt, Markus Gräfe, Valerio Flavio Gili   +6 more
wiley   +1 more source