Resonant Scattering Technique
Resonant Scattering Technique - Related Videos
12:21
Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators
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Cited by 1 •
2016
Efficient generation of nonlinear phenomena related to third order optical non-linear susceptibility Χ(3) interactions in triply resonant silica microspheres is presented in this paper. The interactions here reported are: Stimulated Raman Scattering (SRS), and four wave mixing processes comprising Stimulated Anti-stokes Raman Scattering (SARS).
12:56
Differential Imaging of Biological Structures with Doubly-resonant Coherent Anti-stokes Raman Scattering (CARS)
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Cited by 2 •
2010
A combination of three single wavelength short-pulsed lasers is used to generate coherent anti-Stokes Raman scattering (CARS) and doubly-resonant CARS (DR-CARS). The difference between these signals provides enhanced sensitivity for otherwise difficult to detect coherent Raman signals, enabling imaging of weak Raman scatterers.
01:12
Double Resonance Techniques: Overview
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2024
Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution. Spin decoupling is usually achieved by...
02:52
Resonance
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2020
The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N-O and N=O bonds. If nitrite ions do indeed contain a single and a double bond, the two bond lengths are expected to be different. A double bond between two atoms is shorter (and stronger) than a single bond between the same two atoms. However, experiments show that both N–O bonds in NO2− have the same strength and length, and are identical in all other...
15:06
Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
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Cited by 2 •
2016
Saturable and reverse saturable scattering were discovered in isolated plasmonic particles and adopted as a novel non-bleaching contrast method in super-resolution microscopy. Here the experimental procedures of detecting and extracting nonlinear scattering are explained in detail, as well as how to enhance resolution with the aid of saturated excitation microscopy.
FAQs
Near the resonant condition, the incident excitation couples more strongly to a system’s resonant mode. This coupling changes the measured scattering response, often producing a pronounced spectral feature rather than a gradual background variation. The feature’s intensity, phase, and line shape provide separate observables, allowing engineers to relate the response to the behavior of the tested material or structure.
Material composition, geometry, damping, and boundary conditions shape the resonant response in different ways. Together, they influence the resonant mode and alter scattering intensity, phase, or spectral line shape. By examining these changes, engineers can distinguish variations in a tested system and connect measured signatures with mechanical or electromagnetic behavior.
Ordinary scattering can produce responses without a strong, distinctive resonance feature. Near resonance, however, the enhanced coupling makes changes in intensity, phase, and spectral line shape more pronounced. This concentration of information helps engineers identify properties linked to composition, geometry, damping, or boundary conditions that may be difficult to distinguish in a less selective scattering response.
An engineering measurement applies an incoming wave or particle excitation to the system, then examines the response as the incident frequency or energy approaches resonance. Engineers interpret changes in scattering intensity, phase, and spectral line shape, using those features to characterize the material or structure and identify departures from expected behavior.
Engineering applications extend from material and structural characterization to defect detection. The technique can reveal changes associated with a component’s mechanical or electromagnetic behavior without relying only on ordinary scattering observations. This makes resonant signatures useful for evaluating structures and materials in diagnostic engineering measurements.
The distinctive response near resonance can serve as a design signal, not only a diagnostic result. Engineers use relationships among excitation conditions, scattering intensity, phase, and spectral line shape when developing sensors, filters, and other resonant devices. Changes in these signatures can support device selectivity or indicate how a design responds to its material and boundary conditions.