Passive Coherent Beam Combining Four Channels of Nanosecond Pulsed Laser Using All-Fiber Feedback Loop
YANG Bao-Lai, WANG Xiao-Lin, MA Peng-Fei, ZHOU Pu, SU Rong-Tao, XU Xiao-Jun**
College of Optoelectric Science and Engineering, National University of Defense Technology, Changsha 410073
Abstract ：We present an all-fiber configuration of passive beam combining using an all-fiber feedback loop and demonstrate passive coherent combining of a four-channel nanosecond pulsed laser. The output power, pulse characteristics, polarization extinction ratio and far field laser intensities of the combined output laser are investigated. The experimental results validate that passive phasing using an all-fiber feedback loop provides a simple while robust method for coherent beam combining of pulsed lasers. If replacing the fiber coupler used into a high power tapered fused bundle fiber combiner, this scheme is promising to scale the output power up to the kW level.
出版日期: 2014-11-28
:
42.55.Wd
(Fiber lasers)
42.60.Da
(Resonators, cavities, amplifiers, arrays, and rings)
42.60.Fc
(Modulation, tuning, and mode locking)
[1] Eidam T, Wirth C, Jauregui C and Stutzki F 2011 Opt. Express 19 13218 2013 Opt. Lett. 38 2283 Appl. Phys. B 48 7852011 Opt. Lett. 36 2686 2011 Chin. Phys. Lett. 28 054212 2009 Opt. Lett. 34 863 2008 IEEE Photon. Technol. Lett. 20 888 2004 Electron. Lett. 40 1254 2013 Appl. Phys. Express 6 122702 2011 Opt. Lett. 36 621 2013 Opt. Express 21 13555 2010 Chin. Phys. B 19 94202 Acta Phys. Sin. 61 244201 (in Chinese)Acta Phys. Sin. 59 7869 (in Chinese)Acta Phys. Sin. 60 74206 (in Chinese)Acta Phys. Sin. 61 54210 (in Chinese)2012 IEEE Photon. Technol. Lett. 24 655 2011 Opt. Lett. 36 2907 2012 Opt. Lett. 37 3885 2002 Opt. Express 10 1167
[1]
.
[2]
.
[3]
.
[4]
.
[5]
.
[6]
.
[7]
.
[8]
.
[9]
.
[10]
.
[11]
.
[12]
.
[13]
.
[14]
.
[15]
.
2014, Vol. 31 
