Saturable optical absorption in MoS2 nano-sheet optically deposited on the optical fiber facet

Reza Khazaeinezhad, Sahar Hosseinzadeh Kassani, Tavakol Nazari, Hwanseong Jeong, Jongki Kim, Kyujin Choi, Jae Ung Lee, Jae Hoon Kim, Hyeonsik Cheong, Dong Il Yeom, Kyunghwan Oh

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


Molybdenum disulfide (MoS2) nano-sheets have been successfully deposited directly on the cleaved facet of a silica optical fiber using optical trapping forces. By controlling the incident laser power, various types of MoS2 films were deposited near the fiber core. An area selective deposition was successfully realized during the optical deposition process by using an optical reflectometry method. The presence of MoS2 deposited layer at the fiber end was confirmed by microscopic Raman spectroscopy as well as scanning electron microscope images. Nonlinear response and power dependent transmission of the prepared sample was observed at the wavelength of 1552 nm, which can be used as an all-fiber saturable absorber. Moreover, the fabricated sample was inserted in a Er-doped fiber ring laser cavity and stable Q-switched pulses with the repletion rate from 26.6 kHz to 40.9 kHz were generated, which confirmed the potential of MoS2 as a saturable absorber.

Original languageEnglish
Pages (from-to)224-230
Number of pages7
JournalOptics Communications
Publication statusPublished - 2015 Jan 15

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering


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