Raman scattering

Raman scattering may therefore be used to determine chemical composition and molecular structure.

It has been found that the Raman scattering can be increased by order of magnitude when using metal nanoparticles.

Raman scattering is the result of a virtual electronic state induced by the excitation light.

Both techniques make use of Raman scattering of laser light by the atoms.

With gaseous and solid samples, Raman scattering may still be too weak to easily detect.

Spontaneous Raman scattering is typically very weak.

Stimulated Raman scattering is a nonlinear-optical effect.

In a gas, Raman scattering can occur with a change in energy of a molecule due to a transition (see energy level).

Another, related distinction is that Raman scattering is a coherent process, whereas fluorescence is not.

The scattered light is collected and filtered so that only the light that has undergone Raman scattering is left.

For solid materials, Raman scattering is used as a tool to detect high-frequency phonon and magnon excitations.

Raman scattering is another phenomenon involving inelastic scattering processes of light with vibrational properties of matter.

Raman scattering is an example of inelastic scattering because of the energy transfer between the photons and the molecules during their interaction.

This Raman scattering adds only a slight energy-loss/color-change, and gives only a slight angle of scattering.

The trick with spontaneous Raman scattering is that it is a very low probability process-very little of the incident radiation is Raman scattered.

Temperature can be measured by using a fiber that has evanescent loss that varies with temperature, or by analyzing the Raman scattering of the optical fiber.

The third possibility is that the shifted features are not due to the Doppler motion of the gas but due to stimulated Raman scattering of the main features.

Raman scattering occurs when laser light interacts with phonons in the medium; we've got a bit of a description of the process in a discussion of some related work.

Raman scattering involves the SCATTERING of electromagnetic radiation by molecules, not atoms.

Since Raman scattering will only occur at distinct frequencies based on the medium, Raman scattering can be used to identify chemical composition and orientation in materials.

In Raman amplifiers, Raman scattering of incoming light with phonons in the lattice of the gain medium produces photons coherent with the incoming photons.

One of the most notable applications in which x-ray Raman scattering is superior to soft x-ray absorption is the study of soft x-ray absorption edges in high pressure.

In 1971 Buckingham and Laurence Barron pioneered the study of Raman optical activity, due to differences in the Raman scattering of left and right-polarized light by chiral molecules.

Fourier transform infrared spectroscopy (FTIR) is a technique which is used to obtain an infrared spectrum of absorption, emission, photoconductivity or Raman scattering of a solid, liquid or gas.

Spontaneous Raman scattering is typically very weak, and as a result the main difficulty of Raman spectroscopy is separating the weak inelastically scattered light from the intense Rayleigh scattered laser light.