Observing high-k magnons with Mie-resonance-enhanced Brillouin light scattering

Shear Brillouin light scattering microscope.

Brillouin spectroscopy has been used to characterize shear acoustic phonons in materials. However, conventional instruments had slow acquisition times over 10 min per 1 mW of input optical power, and they required two objective lenses to form a 90° scattering geometry necessary for polarization coupling by shear phonons. Here, we demonstrate a confocal Brillouin microscope capable of detecting ...

Mechanical properties of low- and high-k dielectric thin films: A surface Brillouin light scattering study

Lorenz-Mie light scattering in cellular biology.

The Lorenz-Mie light scattering is discussed as a tool allowing living cell characterization. The scattered light carries information about the size, shape, internal structure and refractive index of the cell. The advantages of light scattering methods consist in high speed, nondestructive, sensitive and relatively easy measurements. Light scattering methods are compatible with other methods. I...

Anomalous stimulated Brillouin scattering via ultraslow light.

We study stimulated Brillouin scattering (SBS) in an ultradispersive coherent medium, and show that the properties of SBS change drastically when the group velocity of light in the material approaches or becomes less than the speed of sound. In particular, forward SBS not allowed in a dispersionless bulk medium takes place in the coherent medium.

Brillouin light-scattering from polymer gels

The experimental results of the Brillouin shift and width for poly(vinyl alcohol) and poly(vinyl chloride) gels as a function of gel network volume fraction have been analysed using the theory of Marqusee and Deutch for Brillouin light-scattering from polymer gels, incorporated with a new plausible assumption relating the speed of sound in the gel network with its volume fraction. It has been f...