Widely-tunable, passively Q-switched erbium-doped fiber laser with few-layer MoS2 saturable absorber.

We propose and demonstrate a MoS2-based passively Q-switched Er-doped fiber laser with a wide tuning range of 1519.6-1567.7 nm. The few-layer MoS2 nano-platelets are prepared by the liquid-phase exfoliation method, and are then made into polymer-composite film to construct the fiber-compatible MoS2 saturable absorber (SA). It is measured at 1560 nm wavelength, that such MoS2 SA has the modulation depth of ∼ 2% and the saturable optical intensity of ∼ 10 MW/cm(2). By further inserting the filmy MoS2-SA into an Er-doped fiber laser, stable Q-switching operation with a 48.1 nm continuous tuning from S- to C-waveband is successfully achieved. The shortest pulse duration and the maximum pulse energy are 3.3 μs and 160 nJ, respectively. The repetition rate and the pulse duration under different operation conditions have been also characterized. To the best of our knowledge, it is the first demonstration of MoS2 Q-switched, widely-tunable fiber laser.

[1]  T. Hasan,et al.  Q-switched fiber laser with MoS2 saturable absorber , 2014, 2014 Conference on Lasers and Electro-Optics (CLEO) - Laser Science to Photonic Applications.

[2]  Sida Wu,et al.  Stable nanosecond pulse generation from a graphene-based passively Q-switched Yb-doped fiber laser. , 2011, Optics letters.

[3]  K. Abramski,et al.  Passive harmonic mode-locking in Er-doped fiber laser based on graphene saturable absorber with repetition rates scalable to 2.22 GHz , 2012 .

[4]  Rüdiger Paschotta,et al.  Experimentally confirmed design guidelines for passively Q-switched microchip lasers using semiconductor saturable absorbers , 2001 .

[5]  E. Garmire,et al.  Resonant optical nonlinearities in semiconductors , 2000, IEEE Journal of Selected Topics in Quantum Electronics.

[6]  Yong-Won Song,et al.  Graphene mode-lockers for fiber lasers functioned with evanescent field interaction , 2010 .

[7]  Shuangchun Wen,et al.  Self-Assembled Topological Insulator: Bi$_{2}$Se$_{3}$ Membrane as a Passive Q-Switcher in an Erbium-Doped Fiber Laser , 2013, Journal of Lightwave Technology.

[8]  Bo Dong,et al.  Tunable Passively $Q$-switched Erbium-Doped Fiber Laser With Carbon Nanotubes as a Saturable Absorber , 2010, IEEE Photonics Technology Letters.

[9]  Gong-Ru Lin,et al.  Soliton compression of the erbium-doped fiber laser weakly started mode-locking by nanoscale p-type Bi2Te3 topological insulator particles , 2014 .

[10]  Yanrong Song,et al.  High-repetition-rate Q-switched fiber laser with high quality topological insulator Bi₂Se₃ film. , 2014, Optics express.

[11]  Jaroslaw Sotor,et al.  Linearly polarized, Q-switched Er-doped fiber laser based on reduced graphene oxide saturable absorber , 2012, 1212.0201.

[12]  Zhipei Sun,et al.  Nanotube–Polymer Composites for Ultrafast Photonics , 2009 .

[13]  Gong-Ru Lin,et al.  Using graphene nano-particle embedded in photonic crystal fiber for evanescent wave mode-locking of fiber laser. , 2013, Optics express.

[14]  Heping Li,et al.  Ultrafast erbium-doped fiber laser mode-locked by a CVD-grown molybdenum disulfide (MoS2) saturable absorber. , 2014, Optics express.

[15]  Samuli Kivistö,et al.  Carbon nanotube films for ultrafast broadband technology. , 2009, Optics express.

[16]  Zhipei Sun,et al.  Nanotube and graphene saturable absorbers for fibre lasers , 2013, Nature Photonics.

[17]  Meng Liu,et al.  Femtosecond pulse erbium-doped fiber laser by a few-layer MoS(2) saturable absorber. , 2014, Optics letters.

[18]  S. Wen,et al.  Molybdenum disulfide (MoS₂) as a broadband saturable absorber for ultra-fast photonics. , 2014, Optics express.

[19]  O. Okhotnikov,et al.  Ultra-fast fibre laser systems based on SESAM technology: new horizons and applications , 2004 .

[20]  M. Liu,et al.  2 GHz passively harmonic mode-locked fiber laser by a microfiber-based topological insulator saturable absorber. , 2013, Optics letters.

[21]  Shuangchun Wen,et al.  Ultra-short pulse generation by a topological insulator based saturable absorber , 2012 .

[22]  D. Shepherd,et al.  Compact diode-pumped passively Q-switched tunable Er-Yb double-clad fiber laser. , 2002, Optics letters.

[23]  Junsu Lee,et al.  A femtosecond pulse erbium fiber laser incorporating a saturable absorber based on bulk-structured Bi2Te3 topological insulator. , 2014, Optics express.

[24]  J. Shan,et al.  Atomically thin MoS₂: a new direct-gap semiconductor. , 2010, Physical review letters.

[25]  Zhengqian Luo,et al.  1.06 μm Q-switched ytterbium-doped fiber laser using few-layer topological insulator Bi₂Se₃ as a saturable absorber. , 2013, Optics express.

[26]  Dingyuan Tang,et al.  Large energy mode locking of an erbium-doped fiber laser with atomic layer graphene. , 2009, Optics express.

[27]  D. Basko,et al.  Graphene mode-locked ultrafast laser. , 2009, ACS nano.

[28]  Bo Liu,et al.  High yield exfoliation of two-dimensional chalcogenides using sodium naphthalenide , 2014, Nature Communications.

[29]  F. Kärtner,et al.  Semiconductor saturable absorber mirrors (SESAM's) for femtosecond to nanosecond pulse generation in solid-state lasers , 1996 .

[30]  S. Yamashita,et al.  Saturable absorbers incorporating carbon nanotubes directly synthesized onto substrates and fibers and their application to mode-locked fiber lasers. , 2004, Optics letters.

[31]  Jaroslaw Sotor,et al.  Mode-locking in Er-doped fiber laser based on mechanically exfoliated Sb_2Te_3 saturable absorber , 2014 .

[32]  Shinji Yamashita,et al.  Optical deposition of graphene and carbon nanotubes in a fiber ferrule for passive mode-locked lasing. , 2010, Optics express.

[33]  I H White,et al.  Wideband-tuneable, nanotube mode-locked, fibre laser. , 2008, Nature nanotechnology.

[34]  J. Coleman,et al.  Ultrafast saturable absorption of two-dimensional MoS2 nanosheets. , 2013, ACS nano.

[35]  A. Radenović,et al.  Single-layer MoS2 transistors. , 2011, Nature nanotechnology.

[36]  F. Torrisi,et al.  Graphene Q-switched, tunable fiber laser , 2010, 1011.0115.

[37]  Min Zhou,et al.  Graphene-based passively Q-switched dual-wavelength erbium-doped fiber laser. , 2010, Optics letters.

[38]  M. Z. Zulkifli,et al.  Tunable graphene-based Q-switched erbium-doped fiber laser using fiber Bragg grating , 2013 .

[39]  Zhengqian Luo,et al.  Topological-Insulator Passively Q-Switched Double-Clad Fiber Laser at 2 $\mu$m Wavelength , 2014, IEEE Journal of Selected Topics in Quantum Electronics.

[40]  Gong-Ru Lin,et al.  Directly exfoliated and imprinted graphite nano-particle saturable absorber for passive mode-locking erbium-doped fiber laser , 2011 .