Comprehensive Investigation on the Role of Temporal Property of Pump Laser in a Single-Frequency Raman Fiber Amplifier

Based on a single-frequency Raman fiber amplifier (RFA) operating at 1120 nm pumped by different laser oscillators at 1070 nm, the role of a temporal property of pump laser in a single-frequency RFA is investigated in detail. The pump lasers with different temporal properties are achieved by varying the bandwidth of the low reflectivity grating that consist of the laser cavity. The experimental results show that a copumped single-frequency RFA could provide a well platform to reflect the intensity stability of the pump laser, and the optical-to-optical conversion efficiency of the RFA varies with the intensity stability of the pump laser. On the other side, the optical-to-optical conversion efficiency of the counter-pumped RFA is independent of the intensity stability of the pump laser. Nevertheless, the intensity stability of the signal laser would be affected by the intensity stability of the pump laser. The experimental results are theoretically analyzed by using our spectral evolution model. Theoretical results are consistent well with the experimental ones, which also reveal that low-noise RFA could be achieved by using intensity stable pumping.

[1]  Miao Yu,et al.  Intrinsic mechanism for spectral evolution in single-frequency Raman fiber amplifier , 2017, 1707.04015.

[2]  Pengfei Ma,et al.  General analysis of SRS-limited high-power fiber lasers and design strategy. , 2016, Optics express.

[3]  X. Wang,et al.  Bidirectional pumped high power Raman fiber laser. , 2016, Optics express.

[4]  J. Taylor,et al.  Duration-tunable picosecond source at 560  nm with watt-level average power. , 2015, Optics letters.

[5]  Pu Zhou,et al.  1.5-kW Yb-Raman Combined Nonlinear Fiber Amplifier at 1120 nm , 2015, IEEE Photonics Technology Letters.

[6]  Lei Zhang,et al.  Versatile Raman fiber laser for sodium laser guide star , 2014 .

[7]  Bing He,et al.  Kilowatt Ytterbium-Raman fiber laser. , 2014, Optics express.

[8]  Iyad Dajani,et al.  Investigations of single-frequency Raman fiber amplifiers operating at 1178 nm. , 2013, Optics express.

[9]  V. Supradeepa.  Stimulated Brillouin scattering thresholds in optical fibers for lasers linewidth broadened with noise. , 2012, Optics express.

[10]  Yan Feng,et al.  Stimulated-Brillouin-scattering-suppressed high-power single-frequency polarization-maintaining Raman fiber amplifier with longitudinally varied strain for laser guide star. , 2012, Optics letters.

[11]  Iyad Dajani,et al.  18 W single-stage single-frequency acoustically tailored Raman fiber amplifier. , 2012, Optics letters.

[12]  Iyad Dajani,et al.  Acoustically segmented photonic crystal fiber for single-frequency high-power laser applications. , 2011, Optics letters.

[13]  Yan Feng,et al.  50W CW visible laser source at 589nm obtained via frequency doubling of three coherently combined narrow-band Raman fibre amplifiers. , 2010, Optics express.

[14]  Yan Feng,et al.  Multiwatts narrow linewidth fiber Raman amplifiers. , 2008, Optics express.

[15]  Lihong V. Wang,et al.  Optical-resolution photoacoustic microscopy for in vivo imaging of single capillaries. , 2008, Optics letters.

[16]  Pump-to-Stokes RIN transfer in Raman fiber lasers and its impact on the performance of co-pumped Raman amplifiers , 2006 .

[17]  C. Headley,et al.  Raman Fiber Lasers , 2004 .

[18]  C. Fludger,et al.  Pump to signal RIN transfer in Raman fiber amplifiers , 2001 .

[19]  Donald T. Gavel,et al.  Image improvement from a sodium-layer laser guide star adaptive optics system , 1997 .

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