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Titolo:
Use of multi-notch filter for simultaneous recording of stokes and anti-stokes Raman signals close to the exciting line
Autore:
Barbillat, J; Roussel, B; Da Silva, E;
Indirizzi:
Univ Sci & Technol Lille, CNRS, LASIR, F-59655 Villeneuve Dascq, France Univ Sci & Technol Lille Villeneuve Dascq France F-59655 e Dascq, France DILOR, F-59000 Lille, France DILOR Lille France F-59000DILOR, F-59000 Lille, France
Titolo Testata:
JOURNAL OF RAMAN SPECTROSCOPY
fascicolo: 9, volume: 30, anno: 1999,
pagine: 745 - 755
SICI:
0377-0486(199909)30:9<745:UOMFFS>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIELECTRIC FILTER; REJECTION FILTER; SPECTROSCOPY; MICROPROBE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Barbillat, J Univ Sci & Technol Lille, CNRS, LASIR, Bat C5, F-59655 Villeneuve Dascq, France Univ Sci & Technol Lille Bat C5 Villeneuve Dascq FranceF-59655
Citazione:
J. Barbillat et al., "Use of multi-notch filter for simultaneous recording of stokes and anti-stokes Raman signals close to the exciting line", J RAMAN SP, 30(9), 1999, pp. 745-755

Abstract

An optical prefilter called Xtranotch, incorporating multiple holographic notch filters (or more generally Bragg diffraction notch filters) has been designed to record, with a single-stage spectrograph, both Stokes and anti-Stokes regions of the Raman spectrum simultaneously, with the smallest possible blind region around the Rayleigh line compatible with the best performance of current supernotch holographic filters. Thus, with this arrangementit is possible to observe simultaneously low-wavenumber Raman lines down to ca 28 cm(-1) on each side of the Rayleigh line together with a high signal throughput along the entire spectrum. Optical alignment of this multi-notch filter is made easier owing to the use of a mechanical system which compensates for the beam deviation occurring when Bragg diffraction notch filters are rotated. Better laser line rejection can also be obtained by replacing one of the holographic notch filters by a more efficient grating filter but at the expense of throughput in the low-wavenumber region, Copyright (C) 1999 John Wiley & Sons, Ltd.

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Documento generato il 29/11/20 alle ore 16:10:43