Mid-infrared spectral broadening in an ultrafast laser inscribed gallium lanthanum sulphide waveguide

John E. McCarthy, Henry T. Bookey, Nicholas D. Psaila, Robert R. Thomson, Ajoy K. Kar

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We report the successful fabrication of mid-infrared waveguides written in a gallium lanthanum sulphide (GLS) substrate via the ultrafast laser inscription technique. Single mode guiding at 2485 nm and 3850 nm is observed. Spectral broadening spanning 1500 nm (-15dB points) is demonstrated under 3850 nm excitation. (C)2012 Optical Society of America

Original languageEnglish
Pages (from-to)1545-1551
Number of pages7
JournalOptics Express
Issue number2
Publication statusPublished - 16 Jan 2012

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