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We describe an easy-to-implement technique that allows for a complete experimental characterization of sub-wavelength diameter tapered optical fibers. Our method is based on a direct and fast numerical analysis of the backward Brillouin…

The application of Brillouin light scattering to the study of the spin-wave spectrum of one- and two-dimensional planar magnonic crystals consisting of arrays of interacting stripes, dots and antidots is reviewed. It is shown that the…

Materials Science · Physics 2015-05-18 G. Gubbiotti , S. Tacchi , M. Madami , G. Carlotti , A. O. Adeyeye , M. Kostylev

Characterizing the micromechanical properties of cells and extracellular matrices is critical in mechanobiology. To meet this need, Brillouin light scattering (BLS) has emerged as a noncontact, high-resolution elastography tool that probes…

Time-domain Brillouin scattering is an opto-acousto-optical probe technique for the evaluation of the transparent materials. Ultrashort pump laser pulses via optoacoustic conversion launch in the sample picosecond coherent acoustic pulses.…

Applied Physics · Physics 2020-06-15 Vitalyi E. Gusev

Brillouin imaging is an emerging optical elastography technique able to generate maps of the mechanical properties at microscale, with great potential in biophysical and biomedical fields. A key parameter is its spatial resolution, which is…

Optics · Physics 2020-02-28 Silvia Caponi , Daniele Fioretto , Maurizio Mattarelli

The scattering of photons from spin waves (Brillouin light scattering -- BLS) is a well-established technique for the study of layered magnetic systems. The information about the magnetic state and properties of the sample is contained in…

Other Condensed Matter · Physics 2009-11-13 M. Buchmeier , H. Dassow , D. E. Bürgler , C. M. Schneider

Brillouin light scattering spectroscopy (BLS) is applied to study the micromechanics of cellulosic viscose fibers, one of the commercially most important, man-made biobased fibers. Using an equal angle scattering geometry, we provide a…

The spatial resolution of direct-modulation Brillouin optical correlation-domain reflectometry is studied with respect to modulation amplitude and frequency. Results suggest that optimal resolution improvement is achieved by increasing…

Instrumentation and Detectors · Physics 2023-05-09 Seiga Ochi , Kouta Ozaki , Kohei Noda , Heeyoung Lee , Kentaro Nakamura , Yosuke Mizuno

High energy electron beams can now be routinely focused to 1-2 {\AA} and offer the ability to obtain vibrational information from materials using monochromated electron energy-loss spectroscopy (EELS) in a scanning transmission electron…

Materials Science · Physics 2021-07-13 Kartik Venkatraman , Peter A. Crozier

The fast-growing development of optomechanical applications has motivated advancements in Brillouin scattering research. In particular, the study of high frequency acoustic phonons at the nanoscale is interesting due to large range of…

Time-domain Brillouin scattering is an all-optical experimental technique based on ultrafast lasers applied for generation and detection of coherent acoustic pulses on time durations of picoseconds and length scales of nanometers. In…

Applied Physics · Physics 2018-06-12 Vitalyi E. Gusev , Pascal Ruello

We present a new optical arrangement which allows to avoid the broadening by finite aperture in Brillouin spectroscopy. In this system, all the rays scattered at the same angle by the whole scattering volume are collected on a single pixel…

Materials Science · Physics 2011-12-01 R. Vialla , B. Rufflé , G. Guimbretière , R. Vacher

Scattering of electronic waves in square and triangular lattice half-planes by a step on the surface is analyzed using the nearest-neighbour tight binding approximation. The changes in lattice spacing and the transfer integral between…

Mesoscale and Nanoscale Physics · Physics 2019-09-04 Basant Lal Sharma

Absorption of ultrashort laser pulses in a metallic grating deposited on a transparent sample launches coherent compression/dilatation acoustic pulses in directions of different orders of acoustic diffraction. Their propagation is detected…

Applied Physics · Physics 2018-02-14 Osamu Matsuda , Thomas Pezeril , Ievgeniia Chaban , Kentaro Fujita , Vitalyi Gusev

Brillouin microscopy is an emerging technique for all-optical biomechanical imaging without the need for physical contact with the sample or for an external mechanical stimulus. However, Brillouin microscopy often retrieves a single,…

Optics · Physics 2024-02-27 Roni Shaashoua , Tal Levy , Barak Rotblat , Alberto Bilenca

Magnonics is a prospective beyond CMOS technology which uses magnons, the quanta of spin waves, for low-power information processing. Many magnonic concepts and devices were recently demonstrated at macro- and microscale, and now these…

We develop the theory of Brillouin light scattering (BLS) from spin wave modes in ferromagnetic nanospheres, within a framework that incorporates the spatial variation of the optical fields within the sphere. Our recent theory of exchange…

Materials Science · Physics 2015-06-25 Ping Chu , D. L. Mills

We present an analysis of the influence of spin wave dispersion relations and profiles on microfocused Brillouin Light Scattering spectra. Three archetypal magnetic materials are reported: a 51-nm thick Bi-substituted YIG, a 25-nm thick…

Mesoscale and Nanoscale Physics · Physics 2026-03-13 Nessrine Benaziz , Thibaut Devolder , Stéphane Andrieu , Jamal Ben Youssef , Jean-Paul Adam

Brillouin scattering has applications ranging from signal processing, sensing and microscopy, to quantum information and fundamental science. Most of these applications rely on the electrostrictive interaction between light and phonons.…