Mode-locked thulium fiber laser with MoS2

Liquid-phase exfoliated 2D material multilayer MoS2 is transferred onto a gold mirror and its saturable absorption at the 2 µm wavelength region is experimentally observed. This transferred MoS2 saturable absorber has a modulation depth of 13.6% and a saturation intensity of 23.1 MW cm−2. This saturable absorber is integrated into a linear Tm3+ fiber laser cavity, and stable fundamental-frequency mode-locking operation is realized at 2 µm with pulse energy of 15.5 nJ, pulse width of ~843 ps, and a repetition rate of 9.67 MHz. The laser spectral width is ~17.3 nm with a center wavelength of 1905 nm. This first presence of mode-locking with multilayer MoS2 sheets in the 2 µm wavelength region verifies that multilayer MoS2 is a good candidate for broadband mode-locking comparable to graphene, as well as a good mode-locker for achieving high pulse energy.

[1]  Liangmo Mei,et al.  Broadband Few‐Layer MoS2 Saturable Absorbers , 2014, Advanced materials.

[2]  D. E. Spock,et al.  190 fs passively mode-locked thulium fiber laser with low threshold , 1996, Summaries of papers presented at the Conference on Lasers and Electro-Optics.

[3]  Kyunghwan Oh,et al.  Mode-locking of Er-doped fiber laser using a multilayer MoS2 thin film as a saturable absorber in both anomalous and normal dispersion regimes. , 2014, Optics express.

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

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

[6]  Jun Wang,et al.  463-MHz fundamental mode-locked fiber laser based on few-layer MoS(2) saturable absorber. , 2015, Optics letters.

[7]  Kevin P. Chen,et al.  All-fiber ultrafast thulium-doped fiber ring laser with dissipative soliton and noise-like output in normal dispersion by single-wall carbon nanotubes , 2013 .

[8]  M. Golling,et al.  SESAMs for High-Power Oscillators: Design Guidelines and Damage Thresholds , 2012, IEEE Journal of Selected Topics in Quantum Electronics.

[9]  Hermann A. Haus,et al.  Broadly tunable sub‐500 fs pulses from an additive‐pulse mode‐locked thulium‐doped fiber ring laser , 1995 .

[10]  Dianyuan Fan,et al.  High power widely tunable Tm:fiber laser with spectral linewidth of 10 pm , 2010 .

[11]  Hsin-Ying Chiu,et al.  Ultrafast and spatially resolved studies of charge carriers in atomically thin molybdenum disulfide , 2012, 1206.6055.

[12]  Masaya Notomi,et al.  Photonic crystal lasers using wavelength-scale embedded active region , 2014 .

[13]  N. Peres,et al.  Fine Structure Constant Defines Visual Transparency of Graphene , 2008, Science.

[14]  Kevin P. Chen,et al.  All-fiber passively mode-locked thulium-doped fiber ring laser using optically deposited graphene saturable absorbers , 2013 .

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

[16]  Shuangchun Wen,et al.  Ytterbium-doped fiber laser passively mode locked by few-layer Molybdenum Disulfide (MoS2) saturable absorber functioned with evanescent field interaction , 2014, Scientific Reports.

[17]  Zhenhua Ni,et al.  Atomic‐Layer Graphene as a Saturable Absorber for Ultrafast Pulsed Lasers , 2009, 0910.5820.

[18]  Qing Wang,et al.  Mode-Locked Tm–Ho-Codoped Fiber Laser at 2.06 $\mu$ m , 2011, IEEE Photonics Technology Letters.

[19]  Baoquan Yao,et al.  Tunable narrow linewidth Tm3+-doped silica fiber laser with an intracavity taper , 2010 .

[20]  Jaroslaw Sotor,et al.  Thulium-doped all-fiber laser mode-locked by CVD-graphene/PMMA saturable absorber. , 2013, Optics express.

[21]  Marc Eichhorn,et al.  High-pulse-energy actively Q-switched Tm 3+ -doped silica 2 μm fiber laser pumped at 792 nm , 2007 .

[22]  M. Vitiello,et al.  Quantum cascade lasers: a versatile source for precise measurements in the mid/far-infrared range , 2013 .

[23]  J. Oudar,et al.  High power dissipative soliton in an Erbium-doped fiber laser mode-locked with a high modulation depth saturable absorber mirror. , 2009, Optics express.

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

[25]  Xiaohui Li,et al.  High-power thulium fiber laser Q switched with single-layer graphene. , 2014, Optics letters.

[26]  Dominique Baillargeat,et al.  From Bulk to Monolayer MoS2: Evolution of Raman Scattering , 2012 .

[27]  T. Korn,et al.  Low-temperature photocarrier dynamics in monolayer MoS2 , 2011, 1106.2951.

[28]  Qi Jie Wang,et al.  Broadband high photoresponse from pure monolayer graphene photodetector , 2013, Nature Communications.