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Some landmarks in the development of Brillouin Scattering technology

April 14, 2021 , 13:00 14:00

Speaker: Dr. John Sandercock
Affiliation: The Table Stable Ltd. – Vibration Isolation & JRS Optical Instruments, Mettmenstetten, Switzerland
Link to MSTeams meeting

By the end of the 1960s Brillouin scattering (BS) had become established as a prospective tool for the study of phonons by laser light scattering. The main drawback  was that the Fabry- Perot interferometers available at the time had insufficient contrast to measure anything but the simplest transparent materials.

Here the development of the tandem multipass spectrometer is described. The high contrast of this instrument enabled measurements on diverse materials to be made – including opaque samples, thin films and spin waves in magnetic materials. Reference is made to some of these early measurements.

Seminar language: English
Chairman: Prof. Jacek Gapiński