To unify travelling- and standing-wave ray-wave structured light by coherent wave packets

2021 ◽  
Author(s):  
Zhaoyang Wang ◽  
Yijie Shen ◽  
Zhensong Wan ◽  
Qiang Liu ◽  
Xing Fu
Keyword(s):  
Standing Wave ◽  
Structured Light ◽  
Wave Packets ◽  
Coherent Wave ◽  
Wave Ray

Interferometric (Fourier-Spectroscopic) Measurement of Electron Energy Distributions

1990 ◽  
Vol 48 (2) ◽  
pp. 110-111 ◽  
Author(s):  
F. Hasselbach ◽  
A. Schäfer
Keyword(s):  
Group Velocity ◽  
Wave Packets ◽  
Index Of Refraction ◽  
Electron Wave ◽  
Fringe Contrast ◽  
Faraday Cage ◽  
Optical Index ◽  
Wien Filter ◽  
Coherent Wave ◽  
Electric And Magnetic Fields

Möllenstedt and Wohland proposed in 1980 two methods for measuring the coherence lengths of electron wave packets interferometrically by observing interference fringe contrast in dependence on the longitudinal shift of the wave packets. In both cases an electron beam is split by an electron optical biprism into two coherent wave packets, and subsequently both packets travel part of their way to the interference plane in regions of different electric potential, either in a Faraday cage (Fig. 1a) or in a Wien filter (crossed electric and magnetic fields, Fig. 1b). In the Faraday cage the phase and group velocity of the upper beam (Fig.1a) is retarded or accelerated according to the cage potential. In the Wien filter the group velocity of both beams varies with its excitation while the phase velocity remains unchanged. The phase of the electron wave is not affected at all in the compensated state of the Wien filter since the electron optical index of refraction in this state equals 1 inside and outside of the Wien filter.

Magnetised Wave Collapse in Solar System Plasmas

1993 ◽  
Vol 10 (4) ◽  
pp. 283-286 ◽  
Author(s):  
Andrew Melatos ◽  
Peter Robinson
Keyword(s):  
Solar System ◽  
Wave Packets ◽  
Particle Interactions ◽  
Coherent Wave ◽  
Wave Collapse ◽  
Non Linear ◽  
Acceleration Zone ◽  
The Waves ◽  
Linear Plasma

AbstractClumpy, intense wave packets observed in situ in the Jovian and terrestrial electron foreshocks, and in the Earth’s auroral acceleration zone, point to the existence of non-linear plasma turbulence in these regions. In non-linear turbulence, wave packets collapse to short scales and high fields, stopping only when coherent wave-particle interactions efficiently dissipate the energy in the waves. The purpose of this paper is to examine the shortest scales and highest fields achieved during collapse in a strongly magnetised plasma, and identify parts of the solar system where the magnetised aspects of wave collapse are important.

Dynamics of particles trapping and detrapping in coherent wave packets

1994 ◽  
Vol 50 (5) ◽  
pp. 3949-3961 ◽  
Author(s):  
David L. Bruhwiler ◽  
John R. Cary
Keyword(s):  
Wave Packets ◽  
Coherent Wave ◽  
Dynamics Of Particles

scholarly journals Resolvent-based modeling of coherent wave packets in a turbulent jet

2019 ◽  
Vol 4 (6) ◽  
Author(s):  
Lutz Lesshafft ◽  
Onofrio Semeraro ◽  
Vincent Jaunet ◽  
André V. G. Cavalieri ◽  
Peter Jordan
Keyword(s):  
Wave Packets ◽  
Turbulent Jet ◽  
Coherent Wave

Localization of Coherent Wave Packets in Plasmas due to Decoherence

2007 ◽  
Vol 47 (4-5) ◽  
pp. 291-296 ◽  
Author(s):  
C. Gocke ◽  
G. Röpke
Keyword(s):  
Wave Packets ◽  
Coherent Wave

Coherent wave packet dynamics in a double-well potential in cavity

2018 ◽  
Vol 32 (04) ◽  
pp. 1850039
Author(s):  
Li Zheng ◽  
Gang Li ◽  
Ming-Song Ding ◽  
Yong-Liang Wang ◽  
Yun-Cui Zhang
Keyword(s):  
Wave Packet ◽  
Degrees Of Freedom ◽  
Wave Packets ◽  
Coherent Wave ◽  
Level Atom ◽  
Wave Packet Dynamics ◽  
Near Resonance ◽  
Left And Right ◽  
Double Well Potential ◽  
Resonance Cavity

We investigate the coherent wave packet dynamics of a two-level atom trapped in a symmetric double-well potential in a near-resonance cavity. Prepared on one side of the double-well potential, the atom wave packet oscillates between the left and right wells, while recoil induced by the emitted photon from the atom entangles the atomic internal and external degrees of freedom. The collapse and revival of the tunneling occurs. Adjusting the width of the wave packets, one can modify the tunneling frequency and suppress the tunneling.

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