Linewidth-Narrowed, Linear-Polarized Single-Frequency Thulium-Doped Fiber Laser Based on Stimulated Brillouin Scattering Effect

A 2-μm linear-polarized hybrid Brillouin–Thulium fiber laser (BTFL) was experimentally investigated for linewidth narrowing. The low threshold for the BTFL in terms of Brillouin pump of ∼200 mW, benefits from the gain of active fiber in the ring cavity for both Brillouin pump and generated Stokes light. More than 205 mW single-frequency Stokes laser was obtained with linewidth reduction ratio of ∼8 times, from 36 to 4.6 kHz. Linear-polarized output was achieved with a polarization extinction ratio of 23.8 dB.

[1]  Farzin Amzajerdian,et al.  Single-frequency narrow-linewidth Tm-doped fiber laser using silicate glass fiber. , 2009, Optics letters.

[2]  S. P. Smith,et al.  Narrow-linewidth stimulated Brillouin fiber laser and applications. , 1991, Optics letters.

[3]  W. Clarkson,et al.  High-Power Single-Frequency Thulium-Doped Fiber DBR Laser at 1943 nm , 2011, IEEE Photonics Technology Letters.

[4]  Yongmin Jung,et al.  Thulium-doped fiber amplifier for optical communications at 2µm , 2013, 2013 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC).

[5]  David J. Richardson,et al.  High power fiber lasers: current status and future perspectives [Invited] , 2010 .

[6]  P. Varming,et al.  20W single-frequency fiber laser operating at 1.93 um , 2007, 2007 Conference on Lasers and Electro-Optics (CLEO).

[7]  Li Zhan,et al.  Watt-level ultrahigh-optical signal-to-noise ratio single-longitudinal-mode tunable Brillouin fiber laser. , 2013, Optics letters.

[8]  G. Cowle,et al.  Hybrid Brillouin/erbium fiber laser. , 1996, Optics letters.

[9]  Alexis Debut,et al.  Linewidth narrowing in Brillouin lasers: Theoretical analysis , 2000 .

[10]  Wei Shi,et al.  220 μJ monolithic single-frequency Q-switched fiber laser at 2 μm by using highly Tm-doped germanate fibers. , 2011, Optics letters.

[11]  V. I. Kovalev,et al.  Suppression of stimulated Brillouin scattering in high-power single-frequency fiber amplifiers. , 2006, Optics letters.

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

[13]  Sailing He,et al.  Low-threshold Brillouin laser at 2 μm based on suspended-core chalcogenide fiber , 2014 .

[14]  Wei Chen,et al.  Strong Linewidth Reduction by Compact Brillouin/Erbium Fiber Laser , 2014, IEEE Photonics Journal.

[15]  Li Zhan,et al.  High signal-to-noise ratio, single-frequency 2 μm Brillouin fiber laser. , 2014, Optics letters.

[16]  Xin He,et al.  1.95 μm kHz-linewidth single-frequency fiber laser using self-developed heavily Tm3+-doped germanate glass fiber. , 2013, Optics express.

[17]  Mehdi Alouini,et al.  Experimental investigation of relative intensity noise in Brillouin fiber ring lasers for microwave photonics applications. , 2008, Optics letters.

[18]  Luc Thévenaz,et al.  High-accuracy measurement of the linewidth of a Brillouin fibre ring laser , 1994 .

[19]  Pu Zhou,et al.  310-W Single Frequency Tm-Doped All-Fiber MOPA , 2015, IEEE Photonics Technology Letters.

[20]  G. J. Cowle,et al.  Properties of Brillouin/erbium fiber lasers , 1997 .

[21]  Jirong Yu,et al.  Efficient operation of diode-pumped single-frequency thulium-doped fiber lasers near 2 micro m. , 2007, Optics letters.

[22]  Alexis Debut,et al.  Experimental and theoretical study of linewidth narrowing in Brillouin fiber ring lasers , 2001 .

[23]  Sailing He,et al.  Low-threshold Brillouin laser at 2 μm based on suspended-core chalcogenide fiber. , 2014, Optics letters.

[24]  Jianquan Yao,et al.  Single-frequency fiber laser at 1950 nm based on thulium-doped silica fiber. , 2015, Optics letters.

[25]  A. Pal,et al.  "All-fiber" tunable laser in the 2 μm region, designed for CO2 detection. , 2012, Applied optics.