Stable passively Q-switched erbium-doped fiber laser incorporating a PbS quantum dots polystyrene composite film based saturable absorber

Xiaolan Sun, Bin Zhou, Chuanhang Zou, Wei Zhao, Qianqian Huang, Nana Li, Tianxing Wang, Chengbo Mou, Tingyun Wang, Alan R. Kost

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

We demonstrated a passively Q-switched erbium-doped fiber laser (EDFL) using PbS quantum dots in polystyrene films (QDPFs) as saturable absorbers (SAs). Compared to other SAs, PbS QDPFs have advantages of broad absorption range, high quantum yield, low cost, and facile preparation. We have successfully generated stable Q-switched pulses with an average output power of 40.19 mW, a single pulse energy of 586.1 nJ, a repetition rate of 68.04 kHz, a pulse width of 3.9 μs, and a signal-to-noise ratio of 50.5 dB under 660 mW pump power. The output of the EDFL has been monitored for 5 consecutive hours under laboratory conditions to show stable operation of the laser system.

Original languageEnglish (US)
Pages (from-to)3231-3236
Number of pages6
JournalApplied optics
Volume57
Issue number12
DOIs
StatePublished - Apr 20 2018

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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