Harmonically mode-locked Er-doped fiber laser based on a Sb2Te3 topological insulator saturable absorber

In this letter we present for the first time, to the best of our knowledge, a harmonically mode-locked Er-doped fiber laser with antimony telluride (Sb2Te3) topological insulator material used as a saturable absorber (SA). The SA was prepared via mechanical exfoliation of the bulk material. The 80 nm thick Sb2Te3 layers transferred onto fiber ferrule entirely cover the fiber core. The Er-doped fiber mode-locked laser based on such SA generated optical pulses was centered at 1558 nm with 1.9 ps duration and a fundamental repetition rate of 3.75 MHz. Increasing the pump power results in stable harmonic mode-locked operation up to the 81st harmonic at 304 MHz repetition frequency. The laser was capable of generating optical solitons with 2.2 ps duration. The number of generated harmonics could be tuned only by changing the pump power injected into the laser cavity.

[1]  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.

[2]  Fabian Rotermund,et al.  Toward higher-order passive harmonic mode-locking of a soliton fiber laser. , 2012, Optics letters.

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

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

[5]  Shuangchun Wen,et al.  Large Energy, Wavelength Widely Tunable, Topological Insulator Q-Switched Erbium-Doped Fiber Laser , 2014, IEEE Journal of Selected Topics in Quantum Electronics.

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

[7]  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.

[8]  Jaroslaw Sotor,et al.  Simultaneous mode-locking at 1565 nm and 1944 nm in fiber laser based on common graphene saturable absorber. , 2013, Optics express.

[9]  U. Keller.  Recent developments in compact ultrafast lasers , 2003, Nature.

[10]  Yoichi Ando,et al.  Topological Insulator Materials , 2013, 1304.5693.

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

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

[13]  Pawel Kaczmarek,et al.  10 GHz passive harmonic mode-locking in Er–Yb double-clad fiber laser , 2011 .

[14]  Yeong Hwan Ahn,et al.  Efficient Mode-Locking of Sub-70-fs Ti:Sapphire Laser by Graphene Saturable Absorber , 2012 .

[15]  Elena D. Obraztsova,et al.  Using the E22 transition of carbon nanotubes for fiber laser mode-locking , 2011 .

[16]  Xiaoming Wei,et al.  A femtosecond hybrid mode-locking fiber ring laser at 409 MHz , 2013 .

[17]  Jaroslaw Sotor,et al.  All-polarization maintaining femtosecond Er-doped fiber laser mode-locked by graphene saturable absorber , 2012 .

[18]  Xi Dai,et al.  Topological insulators in Bi2Se3, Bi2Te3 and Sb2Te3 with a single Dirac cone on the surface , 2009 .

[19]  Govind P. Agrawal,et al.  Nonlinear Fiber Optics , 1989 .

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

[21]  Shuangchun Wen,et al.  Wavelength-tunable picosecond soliton fiber laser with Topological Insulator: Bi2Se3 as a mode locker. , 2012, Optics express.

[22]  Jaroslaw Sotor,et al.  Fundamental and harmonic mode-locking in erbium-doped fiber laser based on graphene saturable absorber , 2012 .

[23]  Y. Meng,et al.  Passive harmonically mode-locked fiber laser with low pumping power based on a graphene saturable absorber , 2012 .

[24]  A. Komarov,et al.  Passive harmonic mode-locking in a fiber laser with nonlinear polarization rotation , 2006 .

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

[26]  F Rotermund,et al.  Graphene mode-locked femtosecond Cr:ZnSe laser at 2500 nm. , 2013, Optics letters.

[27]  F. Amrani,et al.  Passively mode-locked erbium-doped double-clad fiber laser operating at the 322nd harmonic. , 2009, Optics letters.

[28]  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 .

[29]  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.

[30]  W. Dang,et al.  Topological insulator nanostructures for near-infrared transparent flexible electrodes. , 2012, Nature chemistry.

[31]  Pawel Kaczmarek,et al.  A sub-100 fs stretched-pulse 205 MHz repetition rate passively mode-locked Er-doped all-fiber laser , 2013 .

[32]  N. Matuschek,et al.  Frontiers in Ultrashort Pulse Generation: Pushing the Limits in Linear and Nonlinear Optics. , 1999, Science.

[33]  Franz X Kärtner,et al.  High repetition rate, low jitter, low intensity noise, fundamentally mode-locked 167 fs soliton Er-fiber laser. , 2007, Optics letters.

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

[35]  Philippe Grelu,et al.  Multi-gigahertz repetition-rate-selectable passive harmonic mode locking of a fiber laser. , 2013, Optics express.

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

[37]  Gong-Ru Lin,et al.  Nanoscale charcoal powder induced saturable absorption and mode-locking of a low-gain erbium-doped fiber-ring laser , 2013 .