Dual-laser CCD-Raman spectrometer applied to on-line measurement of paper coating paste

Pentti Niemelä, Juha Sumén, Janne Suhonen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

4 Citations (Scopus)


A dual-laser Raman spectrometer was developed, in which the two lasers image two different parts of the spectrum alternately on the same spectrograph. This solves the resolution/bandwidth trade-off problem of CCD Raman spectrometers, previously solved with a dual-grating technique. The dual-laser technique has, however, an additional advantage of alleviating the contradiction between sample fluorescence and detector response, which is illustrated here by applying the technique to the measurement of paper coating paste.
Original languageEnglish
Title of host publicationOpto-Ireland 2005
Subtitle of host publicationOptical Sensing and Spectroscopy
EditorsGerard D. O'Sullivan, Hugh James Byrne, Enda McGlynn, Alan G. Ryder, Brian D. MacCraith
PublisherInternational Society for Optics and Photonics SPIE
ISBN (Print)978-0-8194-5811-7
Publication statusPublished - 2005
MoE publication typeA4 Article in a conference publication
EventOPTO-Ireland 2005: Optical Sensing and Spectroscopy - Dublin, Ireland
Duration: 4 Apr 20056 Apr 2005

Publication series

SeriesProceedings of SPIE


ConferenceOPTO-Ireland 2005


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