Passively Q-switched erbium-doped fiber laser using evanescent field interaction with gold-nanosphere based saturable absorber

Passively Q-switched erbium-doped fiber laser using evanescent field interaction with gold-nanosphere based saturable absorber

We demonstrate an all-fiber passively Q-switched erbium-doped fiber laser (EDFL) using a gold-nanosphere (GNS) based saturable absorber (SA) with evanescent field interaction. Using the interaction of evanescent field for fabricating SAs, long nonlinear interaction length of evanescent wave and GNSs...

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Veröffentlicht in:Optics express 2014-07, Vol.22 (15), p.18537-18542
Hauptverfasser: Fan, Dengfeng, Mou, Chengbo, Bai, Xuekun, Wang, Shaofei, Chen, Na, Zeng, Xianglong
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container_end_page 18542
container_issue 15
container_start_page 18537
container_title Optics express
container_volume 22
creator Fan, Dengfeng
Mou, Chengbo
Bai, Xuekun
Wang, Shaofei
Chen, Na
Zeng, Xianglong
description We demonstrate an all-fiber passively Q-switched erbium-doped fiber laser (EDFL) using a gold-nanosphere (GNS) based saturable absorber (SA) with evanescent field interaction. Using the interaction of evanescent field for fabricating SAs, long nonlinear interaction length of evanescent wave and GNSs can be achieved. The GNSs are synthesized from mixing solution of chloroauricacid (HAuCl4) and sodium citrate by the heating effects of the microfiber's evanescent field radiation. The proposed passively Q-switched EDFL could give output pulses at 1562 nm with pulse width of 1.78 μs, a repetition rate of 58.1 kHz, a pulse energy of 133 nJ and a output power of 7.7 mW when pumped by a 980 nm laser diode of 237 mW.
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title Passively Q-switched erbium-doped fiber laser using evanescent field interaction with gold-nanosphere based saturable absorber
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