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Raman gain from waveguides inscribed in KGd(WO₄)₂ by high repetition rate femtosecond laser

Eaton, S. M.; Merchant, C. A.; Iyer, R.; Zilkie, A. J.; Helmy, A. S.; Aitchison, J. S.; Herman, P. R.; Kraemer, D.; Miller, R. J. D.; Hnatovsky, C.; Taylor, R. S.


We report the formation of waveguides in Raman-active KGd(WO₄)₂ with a focused, high repetition rate femtosecond laser. Parallel guiding regions, formed to either side of the laser-induced damage track, supported TE and TM modes that coupled efficiently to optical fiber at telecom wavelengths. Micro-Raman spectroscopy of the guiding regions revealed the preservation of the characteristic 768 and 901cm¯¹ Raman mode intensities. Raman gain with 6% efficiency was demonstrated for the 768cm¯¹ Raman...[Show more]

CollectionsANU Research Publications
Date published: 2008-02-26
Type: Journal article
Source: Applied Physics Letters
DOI: 10.1063/1.2884188


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