Results 31 to 40 of about 139,045 (195)

Transition to sub-Planck structures through the superposition of q-oscillator stationary states [PDF]

open access: yes, 2010
We investigate the superposition of four different quantum states based on the q-oscillator. These quantum states are expressed by means of Rogers-Szego polynomials.
Jafarov, EI, Van der Jeugt, Joris
core   +3 more sources

Influence of Initial Phase Modulation on the Sensitivity of the Optical Fiber Sagnac Acoustic Emission Sensor

open access: yesApplied Sciences, 2019
Improving the phase sensitivity of the optical fiber Sagnac sensor is very important for accurately detecting weak signals of acoustic emission. Theoretical analysis shows that the initial phase of the sensor is π under ideal conditions, and the ...
Zhuming Cheng   +4 more
doaj   +1 more source

Interferometry of hyper-Rayleigh scattering by inhomogeneous thin films [PDF]

open access: yes, 1999
The use of specific symmetry properties of the optical second-harmonic generation (the s,s-exclusion rule) has allowed us to observe high-contrast hyper-Rayleigh interference patterns in a completely diffuse light - an effect having no analog in case of ...
A. A. Fedyanin   +12 more
core   +2 more sources

DC-electric-field-induced and low-frequency electromodulation second-harmonic generation spectroscopy of Si(001)-SiO$_2$ interfaces [PDF]

open access: yes, 1998
The mechanism of DC-Electric-Field-Induced Second-Harmonic (EFISH) generation at weakly nonlinear buried Si(001)-SiO$_2$ interfaces is studied experimentally in planar Si(001)-SiO$_2$-Cr MOS structures by optical second-harmonic generation (SHG ...
A. A. Fedyanin   +71 more
core   +2 more sources

Aging monitoring and fault positioning for zinc oxide surge arresters based on the fifth harmonic of the leakage current

open access: yesFrontiers in Physics
Current techniques for aging monitoring and fault positioning for zinc oxide surge arresters usually use the third harmonic of the leakage resistive current.
Yongling Lu   +6 more
doaj   +1 more source

High-order harmonic generation from diatomic molecules with large internuclear distance: The effect of two-center interference

open access: yes, 2008
In the present paper, we investigate the high-order harmonic generation (HHG) from diatomic molecules with large internuclear distance using a strong field approximation (SFA) model.
Chen, Y. J., Liu, J.
core   +1 more source

Two-quantum-path interferences in high order harmonic generation [PDF]

open access: yes2007 Conference on Lasers and Electro-Optics (CLEO), 2007
We have investigated intensity dependent high-harmonic generation, when short and long trajectories are both visible in the generated signal. We have measured a plateau-harmonic spectral broadening and yield modulations consistent with quantum-paths interferences calculations.
Za�r, Amelle   +11 more
openaire   +2 more sources

Interference-Induced Phenomena in High-Order Harmonic Generation from Bulk Solids

open access: yesApplied Sciences, 2019
We consider a quantum mechanical model for the high-order harmonic generation in bulk solids. The bandgap is assumed to be considerably larger than the exciting photon energy.
Viktor Szaszkó-Bogár   +3 more
doaj   +1 more source

Single note dissonance through harmonic self-interference [PDF]

open access: yesJournal of Student Science and Technology, 2016
In music, dissonance is the unpleasant quality of sound. While dissonance is generally regarded as arising from two notes played simultaneously, low frequency notes sound dissonant when played alone on a piano. I hypothesize that this dissonance arises from the harmonics of the played note interfering with one another.
openaire   +1 more source

Enhanced Interpolated Dynamic DFT Synchrophasor Estimator Considering Second Harmonic Interferences [PDF]

open access: yesSensors, 2018
In the future, phasor measurement units are expected to be applied in distribution networks (DNs) for their control and monitoring. Because of the widely used power electronic devices in DNs, harmonics are widely present in a voltage/current signal.
Lei Chen   +4 more
openaire   +4 more sources

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