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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 15 — Aug. 1, 2014
  • pp: 4591–4594

Femtosecond pulse erbium-doped fiber laser by a few-layer MoS2 saturable absorber

Hao Liu, Ai-Ping Luo, Fu-Zao Wang, Rui Tang, Meng Liu, Zhi-Chao Luo, Wen-Cheng Xu, Chu-Jun Zhao, and Han Zhang  »View Author Affiliations

Optics Letters, Vol. 39, Issue 15, pp. 4591-4594 (2014)

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We report on the generation of a femtosecond pulse in a fiber ring laser by using a polyvinyl alcohol (PVA)-based molybdenum disulfide (MoS2) saturable absorber (SA). With a saturable optical intensity of 34MW/cm2 and a modulation depth of 4.3%, the PVA-based MoS2 SA had been employed with an erbium-doped fiber ring laser as a mode locker. The mode-locking operation could be achieved at a low pump threshold of 22 mW. A 710fs pulse centered at 1569.5 nm wavelength with a repetition rate of 12.09 MHz had been achieved with proper cavity dispersion. With the variation of net cavity dispersion, output pulses with durations from 0.71 to 1.46 ps were obtained. The achievement of a femtosecond pulse at 1.55 μm waveband demonstrates the broadband saturable absorption of MoS2, and also indicates that the filmy PVA-based MoS2 SA is indeed a good candidate for an ultrafast saturable absorption device.

© 2014 Optical Society of America

OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(140.4050) Lasers and laser optics : Mode-locked lasers
(160.4330) Materials : Nonlinear optical materials
(250.5530) Optoelectronics : Pulse propagation and temporal solitons

ToC Category:
Lasers and Laser Optics

Original Manuscript: June 25, 2014
Revised Manuscript: July 3, 2014
Manuscript Accepted: July 3, 2014
Published: July 31, 2014

Hao Liu, Ai-Ping Luo, Fu-Zao Wang, Rui Tang, Meng Liu, Zhi-Chao Luo, Wen-Cheng Xu, Chu-Jun Zhao, and Han Zhang, "Femtosecond pulse erbium-doped fiber laser by a few-layer MoS2 saturable absorber," Opt. Lett. 39, 4591-4594 (2014)

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