简介:The great challenge with Brillouin spectroscopy is that the Rayleigh light from the pump laser can
overwhelm the small Brillouin shi8ed return signal. So, we have combined our leading edge
HyperFine spectrometer with a简介:The great challenge with Brillouin spectroscopy is that the Rayleigh light from the pump laser can
overwhelm the small Brillouin shi8ed return signal. So, we have combined our leading edge
HyperFine spectrometer with a very narrow band tunable filter to suppress the bright un-shi8ed
laser frequency. The tunable filter (the Green Killer) is easily adjusted to suppress the main laser
peak and exposure gaJng is used by the HyperFine spectrometer to drasJcally increase the full
dynamic range of the instrument. This combinaJon achieves a dynamic raJo of 75 db with our
ultra low noise sCMOS camera.
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