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激光惯性约束核聚变装置中要求光学元件能够承受极高的激光通量,因此对装置内部洁净度有很高的要求.研究表明装置内部的颗粒污染物主要来源于装置内的机械结构件,杂散光作用下机械结构件表面的损伤将产生颗粒污染物.精密金属构件的激光诱导损伤问题是制约高功率激光装置超洁净制造的重要因素.由于机械结构件表面不可避免地存在污染物,因此本文基于传统的分子动力学能量耦合方式,模拟了激光与表面吸附污染物单晶铁的相互作用过程,探讨了铁材料在激光作用下的烧蚀行为,并分析了激光加载方式和激光能量密度对铁材料烧蚀的作用情况,对比研究了材料表面有无污染物对材料烧蚀的影响情况.研究表明:激光作用下铁材料表面原子在污染物原子的剧烈碰撞下呈现出不同的运动状态;激光能量瞬时加载时更容易烧蚀铁材料;当激光能量密度低于0.0064 J/cm2时,将去除铁材料表面的污染物并不会对铁材料产生烧蚀现象,进一步分析表明铁材料表面吸附污染物时更容易被激光烧蚀.研究结果可为提高高功率激光装置的内部洁净度、实现系统超洁净控制提供理论依据.
[1] Hossain M I, Alharbi F H 2013 Mater. Technol. 28 88
[2] Moses E I 2010 IEEE T. Plasma Sci. 38 684
[3] Cavailler C 2005 Plasma Phys. Contr. F. 47 B389
[4] Palmier S, Rullier J L, Capoulade J, Natoli J Y 2008 Appl. Optics 47 1164
[5] Bude J, Miller P, Baxamusa S, Shen N, Laurence T, Steele W, Suratwala T, Wong L, Carr W, Cross D, Monticelli M 2014 Opt. Express 22 5839
[6] Spaeth M L, Manes K R, Honig J 2016 Fusion Sci. Technol. 69 250
[7] Raman R N, Demos S G, Shen N, Feigenbaum E, Negres R A, Elhadj S, Alexander M, Rubenchik A M, Matthews M J 2016 Optics Express 24 2634
[8] Bude J, Carr C W, Cross D, et al 2017 Opt. Express 25 11414
[9] Manenkov A A 2013 Optical Engineering 53 010901
[10] Suratwala T I, Miller P E, Bude J D, Steele R A, Shen N, Monticelli M V, Feit M D, Laurence T A, Norton M A, Carr C W, Wong L L 2011 J. Am. Ceram. Soc. 94 416
[11] Bude J, Miller P, Baxamusa S, Shen N, Laurence T, Steele W, Suratwala T, Wong L, Carr W, Cross D, Monticelli M 2014 Opt. Express 22 5839
[12] Bass I L, Guss G M, Nostrand M J, Wegner P L 2010 Laser-Induced Damage in Optical Materials, International Society for Optics and Photon (Boulder: SPIE) p784220
[13] Bertussi B, Cormont P, Palmier S, Legros P, Rullier J L 2009 Opt. Express 17 11469
[14] Chambonneau M, Chanal M, Reyne S, Duchateau G, Natoli J Y, Lamaignere L 2015 Appl. Opt. 54 1463
[15] Feigenbaum E, Raman R N, Cross D, Carr C W, Matthews M J 2016 Opt. Express 24 10527
[16] Rajgarhia R K, Spearot D E, Saxena A 2009 Comp. Mater. Sci. 44 1258
[17] Alvarez M, Lomba E, Martin C, Lombardero M 1995 J. Chem. Phys. 103 3680
[18] Khosroshahia M E, Pour F A, Hadavi M, Mahmoodi M 2010 Appl. Surf. Sci. 256 7421
[19] Hirayama Y, Atanasov P A, Obara M, Nedialkov N N, Imamova S E 2006 Jpn. J. Appl. Phys. 45 792
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[1] Hossain M I, Alharbi F H 2013 Mater. Technol. 28 88
[2] Moses E I 2010 IEEE T. Plasma Sci. 38 684
[3] Cavailler C 2005 Plasma Phys. Contr. F. 47 B389
[4] Palmier S, Rullier J L, Capoulade J, Natoli J Y 2008 Appl. Optics 47 1164
[5] Bude J, Miller P, Baxamusa S, Shen N, Laurence T, Steele W, Suratwala T, Wong L, Carr W, Cross D, Monticelli M 2014 Opt. Express 22 5839
[6] Spaeth M L, Manes K R, Honig J 2016 Fusion Sci. Technol. 69 250
[7] Raman R N, Demos S G, Shen N, Feigenbaum E, Negres R A, Elhadj S, Alexander M, Rubenchik A M, Matthews M J 2016 Optics Express 24 2634
[8] Bude J, Carr C W, Cross D, et al 2017 Opt. Express 25 11414
[9] Manenkov A A 2013 Optical Engineering 53 010901
[10] Suratwala T I, Miller P E, Bude J D, Steele R A, Shen N, Monticelli M V, Feit M D, Laurence T A, Norton M A, Carr C W, Wong L L 2011 J. Am. Ceram. Soc. 94 416
[11] Bude J, Miller P, Baxamusa S, Shen N, Laurence T, Steele W, Suratwala T, Wong L, Carr W, Cross D, Monticelli M 2014 Opt. Express 22 5839
[12] Bass I L, Guss G M, Nostrand M J, Wegner P L 2010 Laser-Induced Damage in Optical Materials, International Society for Optics and Photon (Boulder: SPIE) p784220
[13] Bertussi B, Cormont P, Palmier S, Legros P, Rullier J L 2009 Opt. Express 17 11469
[14] Chambonneau M, Chanal M, Reyne S, Duchateau G, Natoli J Y, Lamaignere L 2015 Appl. Opt. 54 1463
[15] Feigenbaum E, Raman R N, Cross D, Carr C W, Matthews M J 2016 Opt. Express 24 10527
[16] Rajgarhia R K, Spearot D E, Saxena A 2009 Comp. Mater. Sci. 44 1258
[17] Alvarez M, Lomba E, Martin C, Lombardero M 1995 J. Chem. Phys. 103 3680
[18] Khosroshahia M E, Pour F A, Hadavi M, Mahmoodi M 2010 Appl. Surf. Sci. 256 7421
[19] Hirayama Y, Atanasov P A, Obara M, Nedialkov N N, Imamova S E 2006 Jpn. J. Appl. Phys. 45 792
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