Axial Transmissive f/1.8 Imaging Raman Spectrograph with Volume-Phase Holographic Filter and Grating

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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.

Keywords: Holographic optical elements; Instrumentation; Raman; Raman spectroscopy

Document Type: Research Article


Affiliations: 1: 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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