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Echelle vs interferometer spectrometer for LIBs
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FS
Dec 4, 2009, 8:18:55 AM12/4/09
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I am presently using an F/3 Echelle spectrometer for LIBs work. The
signal is very weak as it is attenuated in water. The Echelle has the
advantage of course, of instant recording of a complete spectrum over
a wide range (300-1000nm here).
I would like to improve my light throughput/sensitivity in some
narrower bands, say near the sodium peaks for example. My expectation
is that an interferometric type of device would work better here,
admitting a lot more light that the slit of the grating type
spectrometer.
signal is very weak as it is attenuated in water. The Echelle has the
advantage of course, of instant recording of a complete spectrum over
a wide range (300-1000nm here).
I would like to improve my light throughput/sensitivity in some
narrower bands, say near the sodium peaks for example. My expectation
is that an interferometric type of device would work better here,
admitting a lot more light that the slit of the grating type
spectrometer.
I would be interested in any further comment comparing the two methods
with regards to optical throughput.
Thanks
Fritz
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