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

Dengfeng Fan, Chengbo Mou, Xuekun Bai, Shaofei Wang, Na Chen, Xianglong Zeng

Research output: Contribution to journalArticlepeer-review

Abstract

We demonstrate an all-fiber passively Q-switched erbiumdoped 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 mWwhen pumped by a 980 nm laser diode of 237 mW.

Original languageEnglish
Pages (from-to)18537-18542
Number of pages6
JournalOptics Express
Volume22
Issue number15
DOIs
Publication statusPublished - 23 Jul 2014

Bibliographical note

© 2014 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.

Fingerprint Dive into the research topics of 'Passively Q-switched erbium-doped fiber laser using evanescent field interaction with gold-nanosphere based saturable absorber'. Together they form a unique fingerprint.

Cite this