Coherent Beam Combining of Fiber Amplifiers Using Stochastic Parallel Gradient Descent Algorithm and Its Application

We present theoretical and experimental research on coherent beam combining of fiber amplifiers using stochastic parallel gradient descent (SPGD) algorithm. The feasibility of coherent beam combining using SPGD algorithm is detailed analytically. Numerical simulation is accomplished to explore the s...

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Vydáno v:IEEE journal of selected topics in quantum electronics Ročník 15; číslo 2; s. 248 - 256
Hlavní autoři: Zhou, Pu, Liu, Zejin, Wang, Xiaolin, Ma, Yanxing, Ma, Haotong, Xu, Xiaojun, Guo, Shaofeng
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York IEEE 01.03.2009
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:
Algorithms
Amplifiers
Beam shaping
Beam steering
Beams (radiation)
Coherence
coherent beam combining
Descent
Distortion
fiber amplifier
Fiber lasers
Fibers
Laser beams
Laser noise
Optical fiber amplifiers
Phased arrays
Power generation
Power lasers
Pump lasers
stochastic parallel gradient descent (SPGD) algorithm
Stochastic processes
Stochasticity
ISSN:1077-260X, 1558-4542
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Shrnutí:We present theoretical and experimental research on coherent beam combining of fiber amplifiers using stochastic parallel gradient descent (SPGD) algorithm. The feasibility of coherent beam combining using SPGD algorithm is detailed analytically. Numerical simulation is accomplished to explore the scaling potential to higher number of laser beams. Experimental investigation on coherent beam combining of two and three W-level fiber amplifiers is demonstrated. Several application fields, i.e., atmosphere distortion compensating, beam steering, and beam shaping based on coherent beam combining using SPGD algorithm are proposed.
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ISSN:1077-260X
1558-4542
DOI:10.1109/JSTQE.2008.2010231