Passively mode-locked Er-doped fiber laser based on SnS2 nanosheets as a saturable absorber

Kangdi Niu; Ruyi Sun; Qingyun Chen; Baoyuan Man; Huanian Zhang

doi:10.1364/PRJ.6.000072

Journals >Photonics Research >Volume 6 >Issue 2 >Page 72 > Article

Photonics Research
Vol. 6, Issue 2, 72 (2018)

Passively mode-locked Er-doped fiber laser based on SnS₂ nanosheets as a saturable absorber

Kangdi Niu¹, Ruyi Sun¹, Qingyun Chen¹, Baoyuan Man¹, and Huanian Zhang^1、2、*

Author Affiliations

¹Shandong Provincial Key Laboratory of Optics and Photonic Devices, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China

²Institute of Data Science and Technology, Shandong Normal University, Jinan 250014, China

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DOI: 10.1364/PRJ.6.000072 Cite this Article Set citation alerts

Kangdi Niu, Ruyi Sun, Qingyun Chen, Baoyuan Man, Huanian Zhang. Passively mode-locked Er-doped fiber laser based on SnS₂ nanosheets as a saturable absorber[J]. Photonics Research, 2018, 6(2): 72 Copy Citation Text

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Abstract

In this paper, tin disulfide (

{SnS}_{2}

), a two-dimensional (2D) n-type direct bandgap layered metal dichalcogenide with a gap value of 2.24 eV, was employed as a saturable absorber. Its appearance and nonlinear saturable absorption characteristics were also investigated experimentally.

{SnS}_{2} - PVA

(polyvinyl alcohol) film was successfully prepared and employed as a mode-locker for achieving a mode-locked Er-doped fiber laser with a pulse width of 623 fs at a pulse repetition rate of 29.33 MHz. The results prove that

{SnS}_{2}

nanosheets will have wide potential ultrafast photonic applications due to their suitable bandgap value and excellent nonlinear saturable absorption characteristics.

Keywords

Lasers, erbium Mode-locked lasers Semiconductor materials

T (z) = [1 - \frac{α_{0} L I_{s}}{I_{s} + I_{0} / (1 + z^{2} / z_{0}^{2})}] / (1 - α_{0} L),

(1)

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T (z) = 1 - \frac{β I_{0} L_{eff}}{2 \sqrt{2} (1 + z^{2} / z_{0}^{2})},

(2)

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L_{eff} = (1 - e^{- α_{0} L}) / α_{0},

(3)

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Kangdi Niu, Ruyi Sun, Qingyun Chen, Baoyuan Man, Huanian Zhang. Passively mode-locked Er-doped fiber laser based on SnS₂ nanosheets as a saturable absorber[J]. Photonics Research, 2018, 6(2): 72

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