A Sensitive Multichannel Detection System for Surface Raman Spectroscopy

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Abstract:

A cooled multichannel detector has been developed that is based on a second-generation image intensifier tube and a Reticon photodiode array. The sensitivity of the device is characterized and discussed in terms of the limiting noise sources. For use in Raman spectroscopy, the detector has been optically matched to a triple spectrograph. Signal-to-noise ratios obtained with this detection system are compared with those of typical photon counting instruments. The required integration time (∼ 1000 s) and substrate properties to record unenhanced Raman signals from an adsorbed molecular monolayer on a surface are discussed.

Keywords: Instrumentation, Raman; Raman spectroscopy; Spectroscopic techniques; Surface analysis

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702884430191

Affiliations: 1: Physical Chemistry Institute, University of Bayreuth, D-8580 Bayreuth, Federal Republic of Germany; present address: Kern & Co. AG, CH-5001 Aarau, Switzerland 2: Physical Chemistry Institute, University of Bayreuth, D-8580 Bayreuth, Federal Republic of Germany; present address: Texas A&M University, College Station, Texas 77843-3255 3: Physical Chemistry Institute, University of Bayreuth, D-8580 Bayreuth, Federal Republic of Germany

Publication date: August 1, 1988

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