Narrow-linewidth passband filter for ultraviolet rotational Raman imaging.
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We present a narrow-passband spectral filter capable of frequency-resolved imaging of rotational Raman light scattering with strong spectral rejection of out-of-band Raman, Rayleigh, and Mie scattering. The filter is based on mercury-vapor absorption, and subsequent resonant fluorescence and has a passband of less than 1 cm(-1). It is paired with an injection-seeded, cavity-locked, frequency-tripled Ti:sapphire laser that produces >30 mJ/pulse of single-mode, tunable light in the vicinity of 253.7 nm. The laser and filter are combined to spectrally resolve scattering from individual rotational Raman lines of nitrogen and oxygen.
author list (cited authors)
Finkelstein, N. D., Lempert, W. R., & Miles, R. B.
complete list of authors
Finkelstein, ND||Lempert, WR||Miles, RB