| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Spectral Beam Combining of Fiber Lasers by Using Reflecting Volume Bragg Gratings |
| Tai-Dou Zhou, Xiao-Bao Liang, Chao Li, Lei Zhao, Jian-Jun Wang, Feng Jing** |
Laser Fusion Research Center, China Academy of Engineering Physics (CAEP), Mianyang 621900
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| Cite this article: |
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Tai-Dou Zhou, Xiao-Bao Liang, Chao Li et al 2016 Chin. Phys. Lett. 33 124205 |
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Abstract By employing three reflecting volume Bragg gratings, a near-infrared 4-channel spectral-beam-combining system is demonstrated to present 720 W combined power with a combining efficiency of 94.7%. The combined laser beam is near-diffraction-limited with a beam factor $M^{2}\sim1.54$. During this 4-channel beam-combining process, no special active cooling measures are used to evaluate the volume Bragg gratings as combining elements are under the higher power laser operation. Thermal expansion and period distortion are verified in a 2 kW 2-channel beam-combining process, and the heat issue in the transmission case is found to be more remarkable than that in the diffraction case. Transmitted and diffracted beams experience wave-front aberrations with different degrees, thus leading to distinct beam deterioration.
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Received: 08 September 2016
Published: 29 December 2016
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| Fund: Supported by the National Natural Science Foundation of China under Grant Nos 11474257 and 61605183. |
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| [1] | Richardson D J, Nilsson J and Clarkson W A 2010 J. Opt. Soc. Am. B 27 B63 | | [2] | Hu M, Yang Y F, Zheng Y et al 2016 Chin. Phys. Lett. 33 044208 | | [3] | Li L, Pang L H, Zhou Z G et al 2015 Chin. Phys. Lett. 32 054201 | | [4] | Ke W W, Wang X J, Bao X F et al 2013 Opt. Express 21 14272 | | [5] | Sun J Y, Xiao Q R, Li D et al 2016 Chin. Phys. B 25 014204 | | [6] | Chen X, Xiao Q R, Jin G Y et al 2015 Chin. Phys. B 24 064208 | | [7] | Smith A V and Smith J J 2011 Opt. Express 19 10180 | | [8] | Jauregui C, Eidam T, Limpert J and Tünnermann A 2011 Opt. Express 19 3258 | | [9] | Eidam T, Wirth C, Jauregui C et al 2011 Opt. Express 19 13218 | | [10] | Fan Y Y, He B, Zhou J et al 2011 Opt. Express 19 15162 | | [11] | Fan T Y 2005 IEEE J. Sel. Top. Quantum Electron. 11 567 | | [12] | Bochove E J 2002 IEEE J. Quantum Electron. 38 432 | | [13] | Sevian A, Andrusyak O, Ciapurin I et al 2008 Opt. Lett. 33 384 | | [14] | Drachenberg D R, Andrusyak O, Venus G B et al 2013 Appl. Opt. 52 7233 | | [15] | Drachenberg D R, Divliansky I, Smirnov V et al 2011 Proc. SPIE 7914 79141F | | [16] | Andrusyak O, Smirnov V, Venus G et al 2009 Opt. Commun. 282 2560 | | [17] | Drachenberg D R, Andrusyak O, Venus G B et al 2014 Appl. Opt. 53 1242 | | [18] | Schmidt O, Wirth C, Nodop D et al 2009 Opt. Express 17 22974 | | [19] | Ott D, Divliansky I, Anderson B et al 2013 Opt. Express 21 29620 |
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