Brillouin scattering
E675969
Brillouin scattering is a light-scattering phenomenon in which photons interact with acoustic phonons or other excitations in a medium, causing small shifts in the light’s frequency that reveal information about the material’s elastic and dynamic properties.
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
inelastic scattering process
ⓘ
light-scattering phenomenon ⓘ |
| canBeExploitedFor |
Brillouin lasers
NERFINISHED
ⓘ
microwave photonics signal processing ⓘ |
| canBeSuppressedBy |
broadening the laser linewidth
ⓘ
using strain or temperature gradients in fibers ⓘ |
| canLimit | power handling in optical fiber communication systems ⓘ |
| causes |
change in photon momentum
ⓘ
frequency shift of scattered light ⓘ |
| conserves |
energy
ⓘ
momentum ⓘ |
| dependsOn |
acoustic velocity of the medium
ⓘ
refractive index of the medium ⓘ scattering geometry ⓘ wavelength of incident light ⓘ |
| differsFrom | Raman scattering by involving acoustic rather than optical phonons ⓘ |
| enhancedIn | high-Q optical resonators ⓘ |
| hasFrequencyShiftScale | gigahertz range ⓘ |
| hasScatteringAngleDependence | frequency shift depends on scattering angle ⓘ |
| hasType |
backward Brillouin scattering
ⓘ
forward Brillouin scattering ⓘ spontaneous Brillouin scattering ⓘ stimulated Brillouin scattering ⓘ |
| historicallyDescribedIn | 1920s ⓘ |
| involvesInteractionBetween |
acoustic phonons
ⓘ
density fluctuations ⓘ other low-frequency excitations ⓘ photons ⓘ |
| namedAfter | Léon Brillouin NERFINISHED ⓘ |
| occursIn |
gases
ⓘ
liquids ⓘ optical fibers ⓘ solids ⓘ |
| produces |
Stokes components
ⓘ
anti-Stokes components ⓘ |
| relatedTo | Raman scattering ⓘ |
| relevantTo |
acousto-optics
ⓘ
condensed matter physics ⓘ materials science ⓘ nonlinear fiber optics ⓘ photonics ⓘ |
| studiedBy | Brillouin light scattering spectroscopy NERFINISHED ⓘ |
| usedFor |
characterizing thin films and crystals
ⓘ
distributed fiber-optic sensing ⓘ measuring acoustic phonon dispersion ⓘ measuring elastic properties of materials ⓘ non-contact mechanical characterization of biological tissues ⓘ probing viscoelastic properties of liquids ⓘ temperature sensing in optical fibers ⓘ |
Referenced by (1)
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