Abstract
Continuous wave laser action around 1.9 μm has been demonstrated in a -doped germanate glass channel waveguide laser fabricated by ion-exchange. Laser action was observed with an absorbed power threshold of only 44 mW and a slope efficiency of up to 6.8% was achieved. Propagation loss at the lasing wavelength was measured to be . We believe this to be the first ion-exchanged -doped glass waveguide laser.
© 2013 Optical Society of America
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