Some landmarks in the development of Brillouin Scattering technology
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