Passive Q-Switching of an All-Fiber Laser Using WS2-Deposited Optical Fiber Taper

Reza Khazaeinezhad, Tavakol Nazari, Hwanseong Jeong, Kyung Jun Park, Byoung Yoon Kim, Dong Il Yeom, Kyunghwan Oh

Research output: Contribution to journalArticle

22 Citations (Scopus)


We demonstrate the passive Q-switching operation of an erbium-doped fiber laser using a few-layer WS2-based saturable absorber with evanescent field interaction. WS2 flakes have been synthesized via a liquid-phase exfoliation method, and an optical fiber taper was selected as a light-material template that causes to achieve a long interaction length of the evanescent wave. Subsequently, the prepared solution was optically deposited around the 3-mm interaction length of the fabricated optical fiber taper with a 5-μ waist diameter. The proposed Q-switched fiber laser based on the WS2-deposited fiber taper saturable absorber could generate stable output pulses at 1565 nm, with a pulsewidth ranging from 1.3 to 3 μs and a repetition rate of 33-108 kHz.

Original languageEnglish
Article number1503507
JournalIEEE Photonics Journal
Issue number5
Publication statusPublished - 2015 Oct 1

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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    Khazaeinezhad, R., Nazari, T., Jeong, H., Park, K. J., Kim, B. Y., Yeom, D. I., & Oh, K. (2015). Passive Q-Switching of an All-Fiber Laser Using WS2-Deposited Optical Fiber Taper. IEEE Photonics Journal, 7(5), [1503507].