The Utilization of a Holographic Bragg Diffraction Filter for Rayleigh Line Rejection in Raman Spectroscopy

Author:

Carrabba Michael M.1,Spencer Kevin M.1,Rich Chris1,Rauh David1

Affiliation:

1. EIC Laboratories, Inc., Norwood, Massachusetts 02062 (M.M.C., K.M.S., R.D.R.); and Physical Optics Corporation, Torrance, California 90505 (CM.)

Abstract

Raman spectra have been observed to within less than 200 cm−1 of the Rayleigh line through the use of a holographic Bragg diffraction (HBD) filter. The HBD filter has a very high optical density (5.8 OD) while maintaining a relatively high and flat transmission in the region >200 cm−1. Utilization of an HBD filter allowed the observation of Raman spectra with a compact 0.125-mm spectrograph. Spectra of solid, liquid, and surface-enhanced Raman (SER) samples have been demonstrated with the HBD Raman system.

Publisher

SAGE Publications

Subject

Spectroscopy,Instrumentation

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