Articles with "frequency shifts" as a keyword



A computational investigation of the red and blue shifts in hydrogen bonded systems

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Published in 2017 at "Journal of Chemical Sciences"

DOI: 10.1007/s12039-017-1304-4

Abstract: The present work reports results of computational investigations of hydrogen bonding, with regard to the most common red shift in the vibrational frequency, as well as the less common blue shift in several hydrogen bonded… read more here.

Keywords: hydrogen bonded; bonded systems; frequency shifts; shifts hydrogen ... See more keywords

Investigation of oscillations above the acoustic cut-off frequency for a sample of Kepler stars. II. Identifying temporal frequency shifts

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Published in 2025 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/staf050

Abstract: Stellar oscillations with frequencies greater than the acoustic cut-off frequency are not trapped within the star’s interior. Geometric interference between these high-frequency waves produces a peak-like structure in the power spectrum of the star, known… read more here.

Keywords: acoustic cut; sample; pseudo mode; frequency shifts ... See more keywords

Nonreciprocal Interactions Induce Frequency Shifts in Superradiant Lasers.

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Published in 2025 at "Physical review letters"

DOI: 10.1103/physrevlett.134.193603

Abstract: Superradiant lasers, which consist of incoherently driven atoms coupled to a lossy cavity, are a promising source of coherent light due to their stable frequency and superior narrow linewidth. We show that when a fraction… read more here.

Keywords: superradiant lasers; induce frequency; nonreciprocal interactions; frequency shifts ... See more keywords

Design Considerations for Frequency Shifts in a Laterally Finite FBAR Sensor in Contact With the Newtonian Liquid

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Published in 2020 at "IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control"

DOI: 10.1109/tuffc.2020.3006186

Abstract: Mode-coupled vibrations in a thickness-shear (TSh) mode and laterally finite film bulk acoustic resonator (FBAR) with one face in contact with Newtonian (linearly viscous and compressional) liquid are investigated. With boundary conditions and interface continuity… read more here.

Keywords: contact; frequency shifts; fbar; frequency ... See more keywords

Dielectric perturbations: anomalous resonance frequency shifts in optical resonators.

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Published in 2021 at "Optics letters"

DOI: 10.1364/ol.420791

Abstract: Small perturbations in the dielectric environment around resonant dielectric structures usually lead to a frequency shift of the resonator modes directly proportional to the polarizability of the perturbation. Here, we report experimental observations of strong… read more here.

Keywords: frequency shifts; frequency; anomalous resonance; dielectric perturbations ... See more keywords

Spatio-temporal enhancement of Raman-induced frequency shifts in graded-index multimode fibers

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Published in 2019 at "Optics Letters"

DOI: 10.1364/ol.44.002637

Abstract: We investigate the impact of intrapulse Raman scattering and third-order dispersion on the propagation of a pulsed optical beam inside graded-index (GRIN) fibers by solving an effective nonlinear Schrodinger equation that includes the spatial self-imaging… read more here.

Keywords: frequency shifts; graded index; induced frequency; raman ... See more keywords