| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Coherent Beam Combining of Two Fiber Amplifiers Seeded by Multi-Wavelength Fiber Laser |
| WANG Xiao-Lin, ZHOU Pu, MA Yan-Xing, MA Hao-Tong, XU Xiao-Jun, LIU Ze-Jin, ZHAO Yi-Jun |
| College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073 |
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| Cite this article: |
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WANG Xiao-Lin, ZHOU Pu, MA Yan-Xing et al 2010 Chin. Phys. Lett. 27 124201 |
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Abstract Multi-wavelength seed laser can mitigate stimulated Brillouin scattering (SBS) and improve the output power of the narrow-linewidth fiber amplifier. In this present study, coherent combining of two fiber amplifiers seeded by a multi-wavelength laser is proposed and demonstrated using stochastic parallel gradient descent (SPGD) algorithm. The long-exposure visibility of the far field interference pattern is increased from 0.15 to 0.97 when the system evolves from open-loop to closed-loop. The feasibility of coherent combining of fiber amplifiers seeded by multi-wavelength seed laser is validated.
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| Keywords:
42.25.Kb
42.55.Wd
42.60.Da
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Received: 09 February 2010
Published: 23 November 2010
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