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Ultrafast laser waveguide inscription in Gallium Lanthanum Sulfide

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We report the fabrication of low-loss single-mode waveguides in the near- and mid-infrared in gallium lanthanum sulfide using femtosecond lasers. Three different techniques were explored: cumulative heating, slit-beam shaping and multiscan. Low propagation losses of 1.82 ± 0.07 dB/cm at 1550 nm were achieved.

© 2016 Optical Society of America

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