An axial transmissive Raman spectrograph is described. The instrument employs volume-phase holograms as the laser line rejection filter and transmission grating. The on-axis configuration and the use of a high-spatial-frequency transmission grating allows nearly diffraction-limited
imaging and pixel-limited resolution at f1.8. The performance of the instrument is demonstrated for fiber-optic probe and microprobe Raman spectroscopy.
Kaiser Optical Systems, Inc., P.O. Box 983, Ann Arbor, Michigan 48106 2:
Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055
Publication date: November 1, 1993
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