8 May 2017 Q-switched ytterbium-doped fiber laser with topological insulator-based saturable absorber
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Abstract
A stable passive Q-switched ytterbium-doped fiber laser (YDFL) operating at 1057.4 and 1044.5 nm is demonstrated using two types of topological insulator-based saturable absorbers (SAs): bismuth (III) selenide ( Bi 2 Se 3 ) and bismuth (III) telluride ( Bi 2 Te 3 ). These materials are embedded in polyvinyl alcohol film and incorporated in the YDFL cavity. Using Bi 2 Se 3 SA, the YDFL obtains a stable train of pulses with a repetition rate that is tunable from 48.83 to 102 kHz. Meanwhile, the corresponding pulse width decreases from 8.9 to 3.48    μ s as the pump power increases from 67.6 to 88.3 mW. For the Bi 2 Te 3 -based Q-switched YDFL, the repetition rate grows from 43.25 to 93.63 kHz and the pulse width shrinks from 5.65 to 2.01    μ s as the 980-nm pump power rises from 72.8 to 98.4 mW. The maximum pulse energy is obtained with the Bi 2 Te 3 SA at 29.95 n
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Ahmed H. H. Al-Masoodi, Fauzan Ahmad, Mahmoud H. M. Ahmed, Hamzah Arof, Sulaiman W. Harun, "Q-switched ytterbium-doped fiber laser with topological insulator-based saturable absorber," Optical Engineering 56(5), 056103 (8 May 2017). https://doi.org/10.1117/1.OE.56.5.056103 . Submission: Received: 31 January 2017; Accepted: 13 April 2017
Received: 31 January 2017; Accepted: 13 April 2017; Published: 8 May 2017
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