Investigation of blue emission from Raman-active crystals

Its origin and impact on laser performance

Jonas Jakutis Neto*, Christopher Artlett, Andrew Lee, Jipeng Lin, David Spence, James Piper, Niklaus Ursus Wetter, Helen Pask

*Corresponding author for this work

Research output: Contribution to journalArticle

12 Citations (Scopus)


The origin and consequences to laser performance of blue emission observed in some Raman crystals has been studied in detail, leading us to attribute the origin of the phenomenon to fluorescence from Tm3+(1G4) impurity ions which are excited via sequential upconversion. For the specific case of a Nd:YLF/KGW Raman laser, we show that the blue fluorescence has modest but significant impacts on laser performance and thermal loading. If the blue fluorescence was eliminated, then laser efficiency could be increased by 15% and thermal loading in the KGW crystal reduced by 17%.

Original languageEnglish
Pages (from-to)889-902
Number of pages14
JournalOptical Materials Express
Issue number5
Publication statusPublished - 2014

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