Results 31 to 40 of about 59,731 (197)

A compact and robust diode laser system for atom interferometry on a sounding rocket

, 2016
We present a diode laser system optimized for laser cooling and atom interferometry with ultra-cold rubidium atoms aboard sounding rockets as an important milestone towards space-borne quantum sensors.
Braxmaier, C., Döringshoff, K., Grosse, J., Hellmig, O., Kohfeldt, A., Krutzik, M., Peters, A., Schkolnik, V., Sengstock, K., Wenzlawski, A., Wicht, A., Windpassinger, P.   +11 more
core   +1 more source

Development of a Confocal Laser Doppler Flowmeter Using Optical Feedback Interferometry Techniques

Proceedings, 2017
We are presenting a novel confocal laser Doppler flowmeter based on optical feedback interferometry. [...]
Carlos Yáñez, Santiago Royo
doaj   +1 more source

Experimental comparison of autodyne and heterodyne laser interferometry using a Nd:YVO4 microchip laser

, 2011
Using a Nd:YVO4 microchip laser with a relaxation frequency in the megahertz range, we have experimentally compared a heterodyne interferometer based on a Michelson configuration with an autodyne interferometer based on the laser optical feedback imaging
Blaize, Bramati, Eric Lacot, Gilles, Hugon, Hugues Guillet de Chatellus, Kawai, Ko, Kolobov, Lacot, Lacot, Lacot, Lacot, Lacot, Laroche, Muzet, Okamoto, Olivier Hugon, Olivier Jacquin, Otsuka, Otsuka, Otsuka, Otsuka, Otsuka, Suddo, Wilfried Glastre, Witomski, Zaykowski   +27 more
core   +2 more sources

The measurement of plasma-facing materials’ topography variation by means of temporal phase-shifting speckle interferometry technique

Nuclear Materials and Energy, 2017
Temporal phase-shifting speckle interferometry is proposed to measure plasma-facing materials’ (PFMs) topography variation in tokamak. In this approach, laser ablation method is used to simulate erosion and redeposition, and polished molybdenum/tungsten (
Xiaoqian Cui, Hongbei Wang, Mengge Zhao, Guangnan Luo, Hongbin Ding   +4 more
doaj   +1 more source

Pulsed Frequency Shifted Feedback Laser for Accurate Long Distance Measurements: Beat Order Determination

, 2012
Long-distance measurements (10 m - 1000 m) with an accuracy of 10-7 is a challenge for many applications. We show that it is achievable with Frequency Shifted Feedback (FSF) laser interferometry technique, provided that the determination of the radio ...
Amann, Azouiqui, Balle, Golubovic, Guillet de Chatellus, Ito, Jean-Paul Pique, Kasahara, Kowalski, Le Floch, Nakamura, Nakamura, Nakamura, Nakamura, Nakamura, Ogurtsov, Ogurtsov, Pique, Pique, Polhemus, Stellpflug, Yatsenko, Zhang   +22 more
core   +5 more sources

Experimental demonstration of a Displacement noise Free Interferometry scheme for gravitational wave detectors showing displacement noise reduction at low frequencies

, 2010
This paper reports an experimental demonstration of partial displacement noise free laser interferometry in the gravitational wave detection band. The used detuned Fabry-Perot cavity allows the isolation of the mimicked gravitational wave signal from the
Chelkowski, Simon, Freise, Andreas, Hild, Stefan, Perreca, Antonio   +3 more
core   +1 more source

Viscoelasticity‐Induced Controllable Periodic Meso‐Textures of Liquid Crystal Polymers in Additive Manufacturing

Advanced Functional Materials, EarlyView.
Viscoelasticity‐driven instabilities are harnessed to create tunable, periodic textures in 3D‐printed liquid crystalline polymers. This study illustrates how processing parameters control these spontaneous meso‐scale patterns. These unique structural architectures unlock new possibilities for functional devices, ranging from photonic components to ...
Miaomiao Zou, Jiongyi Yan, Dick F. Firdaus, Amy Jin, Jiaxuan Li, Shushan Wang, Ran Chen, Xudong Tao, Zehao Ji, Yi Liu, Zichen Wang, Christos Margadji, Mark Kotter, J. Axel Zeitler, George G. Malliaras, Ronan Daly, Andrew Gleadall, Sebastian W. Pattinson   +17 more
wiley   +1 more source

Height Resolution of Antibody Spots Measured by Spinning-Disk Interferometry on the BioCD

Micromachines, 2016
Spinning-disc interferometry (SDI) is a high-speed laser scanning approach to surface metrology that uses common-path interferometry to measure protein spots on a BioCD disk. The measurement sensitivity depends on the scanning pitch and on the time-base.
Kevin O’Brien, Ming Zhao, David Nolte
doaj   +1 more source

A spaceborne gravity gradiometer concept based on cold atom interferometers for measuring Earth's gravity field

, 2014
We propose a concept for future space gravity missions using cold atom interferometers for measuring the diagonal elements of the gravity gradient tensor and the spacecraft angular velocity.
Carraz, Olivier, Haagmans, Roger, Massotti, Luca, Siemes, Christian, Silvestrin, Pierluigi   +4 more
core   +1 more source

Interference of Clocks: A Quantum Twin Paradox [PDF]

, 2019
The phase of matter waves depends on proper time and is therefore susceptible to special-relativistic (kinematic) and gravitational time dilation (redshift).
Abend, Sven, Di Pumpo, Fabio, Ertmer, Wolfgang, Friedrich, Alexander, Gaaloul, Naceur, Giese, Enno, Kleinert, Stephan, Loriani, Sina, Meiners, Christian, Rasel, Ernst M., Roura, Albert, Schleich, Wolfgang P., Schlippert, Dennis, Schubert, Christian, Tell, Dorothee, Ufrecht, Christian, Wodey, Étienne, Zych, Magdalena   +17 more
core   +3 more sources