Abstract
We report on aluminum oxide nanoparticles ( NPs) as a saturable absorber (SA) for passively -switched erbium-doped fiber laser (EDFL) operating at a wavelength of 1560.6 nm within the C-band region. A thin film of -SA was prepared using polyvinyl alcohol (PVA) as a host polymer. Very stable pulses with a 57.8 KHz repetition rate and 5.6 μs pulse width at a threshold pump power of 158 mW were obtained. A 2.8 μs pulse width, 81 kHz pulse repetition rate, with maximum pulse energy of 56.7 nJ at a diode pump power of 330 mW were recorded. To the best of the authors’ knowledge, this is the first time that a -based SA has been used to generate a -switched EDFL.
© 2017 Optical Society of America
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