Brillouin-Light-Scattering Spectroscopy

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Multi-pass tandem Fabry-Pérot interferometer (TFPI) • High contrast: more than 1:1010 • High spectral resolution in the Sub-GHz-Regime (up to 50 MHz) • Accessible frequency range: 0,2 GHz – 500 GHz J. Sandercock, www.jrs-si.ch H. Schultheiß, www.tfpdas.de Benjamin Jungfleisch SFB/TR49 Student Seminar 20th to 21th of July 2010
λ Frequency Analysis BLS setup Active Stabilization + Positioning • optical resolution: up to 250 nm • 2D scanning stage • controlling sample position while measuring • frequency range: 200 MHz – 1 THz • spectral resolution: up to 50 MHz • accuracy: better than 20 nm • high reproducibility Sample Stage Viewing System TFPDAS 4 (www.tfpdas.de) by H. Schultheiss Benjamin Jungfleisch SFB/TR49 Student Seminar 20th to 21th of July 2010
Page 1 and 2: Brillouin-Light-Scattering Spectros
Page 3 and 4: Spin waves Benjamin Jungfleisch SFB
Page 5 and 6: q|| ⋅ d H 0 Spin waves Distincti
Page 7 and 8: Raman-Scattering • Optical phonon
Page 9 and 10: Fabry-Pérot interferometer (FPI) T
Page 11 and 12: The free spectral range (FSR) is gi
Page 13: Operation of the TFPI Possibility t
Page 17 and 18: 1) Time resolution H. Schultheiss e
Page 19 and 20: Time-resolved BLS Study the decay o
Page 21 and 22: Phase-resolved BLS Inelastically sc
Page 23 and 24: Applications: Wavevector-resolved B
Page 25 and 26: Wavevector-resolved BLS Wavevector

Brillouin-Light-Scattering Spectroscopy

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