Topic
Interference (wave propagation)
About: Interference (wave propagation) is a research topic. Over the lifetime, 26086 publications have been published within this topic receiving 321110 citations.
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TL;DR: In this article, a scanning interference fringe is obtained by intersecting two laser beams with different frequencies, and used as a thermoelastic source for generating 100 MHz band surface acoustic wave (SAW).
Abstract: We present a novel method for generating 100 MHz band surface acoustic wave (SAW) by using a scanning interference fringe at the phase velocity of the SAW. The scanning interference fringe is obtained by intersecting two laser beams with different frequencies, and used as a thermoelastic source. The principle of this method is described, and experimentally demonstrated in the 110 MHz Rayleigh waves on an aluminum specimen generated by a long‐pulse (140 ns) Q‐switched Nd:YAG laser.
60 citations
TL;DR: In this paper, the interference of individual surface plasmons (collective oscillations of an electron gas) with over 90% visibility is demonstrated, proving their bosonic character and therefore suitability for applications.
Abstract: Photonic integrated circuits are a promising platform for optical quantum computation, but many practical issues must be tackled. This study demonstrates interference of individual surface plasmons (collective oscillations of an electron gas) with over 90% visibility, proving their bosonic character and therefore suitability for applications. Effects of intrinsic losses in plasmonic waveguides on quantum information processing are also discussed.
60 citations
TL;DR: The interference from the side lanes can be well approximated using two-dimensional stochastic models without any significant loss of accuracy and the developed models are applied to estimate the signal-to-interference ratio and link capacity of mmWave/THz band V2V communications.
Abstract: Communications systems operating in the millimeter-wave (mmWave) and terahertz (THz) band have been recently suggested to enable high data-rate vehicle-to-vehicle (V2V) communications in 5G and beyond wireless networks. However, massive deployment of such systems may lead to significant interference, affecting the performance of information transmission. While the multipath interference caused by the signal reflections from the road has been extensively discussed in the literature, the interference caused by the vehicles on the side lanes has been insufficiently studied so far. In this paper, using a combination of measurement, simulation, and analytical methods, we comprehensively characterize the interference from the side lanes in two typical deployments including highway and urban road environments for millimeter-wave and low terahertz bands. Both the multipath interference and direct interference from the transmitting vehicles on the side lanes are taken into account. As a result of our study, we reveal that: the interference from the side lanes can be well approximated using two-dimensional stochastic models without any significant loss of accuracy; and even when highly directional antennas are used there are special spatial configurations, where the interference may greatly affect the performance of the communication systems. We lately apply the developed models to estimate the signal-to-interference ratio and link capacity of mmWave/THz band V2V communications.
60 citations
TL;DR: In this article, a photographic plate, exposed to fine interference fringes and processed with high gamma, was used to record an amplification of the original phase difference, and the results were shown with a Mach-Zehnder two-beam interferometer.
Abstract: Bryngdahl pointed out that a photographic plate, exposed to fine interference fringes and processed with high gamma, can record an amplification of the original phase difference. Interferograms obtained with this technique are shown. With a Mach-Zehnder two-beam interferometer, 14-fold phase-difference amplification was observed. Sources of experimental errors encountered in practice are discussed.
60 citations
TL;DR: A bunch-length measuring method has been developed to measure the subpicosecond electron pulses generated at the Stanford University Short Intense Electron Source (SUNSHINE) facility, which demonstrates subpicOSEcond resolving power that cannot be achieved by existing time-resolved methods.
Abstract: A bunch-length measuring method has been developed to measure the subpicosecond electron pulses generated at the Stanford University Short Intense Electron Source (SUNSHINE) facility. This method utilizes a far-infrared Michelson interferometer to measure coherent transition radiation emitted at wavelengths longer than or equal to the bunch length via optical autocorrelation. To analyze the measurement, a simple and systematic way has also been developed, which considers interference effects on the interferogram caused by the beam splitter; hence the electron bunch length can be easily obtained from the measurement. This simple, low-cost, frequency-resolved autocorrelation method demonstrates subpicosecond resolving power that cannot be achieved by existing time-resolved methods.
60 citations