Note: Higher resolution Brillouin spectroscopy by offset stabilization of a tandem Fabry-Pérot interferometer.
A simple modification to a Sandercock-type tandem Fabry-Pérot interferometer is demonstrated. By adding an independent reference laser with temperature tunability, narrow Brillouin lines that are tens GHz shifted from the Rayleigh line can be recorded with much higher frequency resolution than in the original system.
Department of Physics, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan.
Akitoshi
A
Koreeda
Seishiro
S
Saikan