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The near-field distribution of a light wave in a metal-coated optical fiber probe under the illumination of femtosecond laser pulses is numerically simulated. By choosing the maximum of the calculated light field data and the time when the light field reaches the maximum in a time period of one light wave cycle at each spatial point, we obtain the amplitude and phase distributions of the light field near the probe. We find that the output amplitude distribution of y-polarization has roughly a circled-cross-like pattern with two arc-like zero-amplitude zones. The zeros of light intensity are the phase singularities at which the phase is undefined. By analyzing the output phase distribution of y-polarization, we obtain the temporal evolution of the phase singularities and their characteristics
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Keywords:
- finite difference time domain /
- femtosecond laser pulse /
- fiber probe /
- phase singularities
[1] Berry M V 1978 J. Phys. A: Math. Gen. 11 0305
[2] Nye J F, Berry M V 1974 Proc. R. Soc. Lond. A 336 165
[3] Soskin M S, Vasnetsov M V 2001 Prog. Opt. 42 219
[4] Chen X Y, Li Z H, Li H X, Zhang M N, Cheng C F 2012 Opt. Express 20 17833
[5] Song H S, Cheng C F, Liu M, Teng S Y, Zhang N Y 2009 Acta Phys. Sin. 58 291 (in Chinese) [宋洪胜, 程传福, 刘曼, 滕树云, 张宁玉 2009 58 291]
[6] O'Holleran K, Dennis M R, Flossmann F, Padgett M J 2008 Phys. Rev. Lett. 100 053902
[7] Flossmann F, O‘Holleran K, Dennis M R, Padgett M J 2008 Phys. Rev. Lett. 100 203902
[8] Egorov R I, Soskin M S 2008 Phys. Rev. Lett. 100 103901
[9] Soskin M S, Egorov R I, Freund I 2007 Opt. Lett. 32 891
[10] Zhang S, Hu B, Sebbah P, Genack A Z 2007 Phys. Rev. Lett. 99 063902
[11] Zhang S, Genack A Z 2007 Phys. Rev. Lett. 99 203901
[12] Yao H B, Zheng Y J 2011 Acta Phys. Sin. 60 128201 (in Chinese) [姚洪斌, 郑雨军 2011 60 128201]
[13] Zhang N, Bao W X, Yang J H, Zhu X N 2013 Chin. Phys. B 22 054209
[14] Li Z, Zhang J S, Yang J, Gong Q H 2007 Acta Phys. Sin. 56 3630 (in Chinese) [李智, 张家森, 杨景, 龚旗煌 2007 56 3630]
[15] Burresi M, Engelen R J P, Opheij A, van Oosten D, Mori D, Baba T, Kuipers L 2009 Phys. Rev. Lett. 102 033902
[16] Han J L, Zou Q, Teng S Y, Dong Q R, Cheng C F 2006 J. Shandong Normal Univ. (Natural Science) 21 61 (in Chinese) [韩俊玲, 邹倩, 滕树云, 董庆瑞, 程传福 2006 山东师范大学学报(自然科学版) 21 61]
[17] Liu M, Song H S, Chen X Y, Liu G Y, Teng S Y, Cheng C F 2010 Chin. Phys. Lett. 27 034202
[18] Liu G Y, Han J L, Liu M, Teng S Y, Cheng C F 2010 Chin. Phys. Lett. 27 067802
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[1] Berry M V 1978 J. Phys. A: Math. Gen. 11 0305
[2] Nye J F, Berry M V 1974 Proc. R. Soc. Lond. A 336 165
[3] Soskin M S, Vasnetsov M V 2001 Prog. Opt. 42 219
[4] Chen X Y, Li Z H, Li H X, Zhang M N, Cheng C F 2012 Opt. Express 20 17833
[5] Song H S, Cheng C F, Liu M, Teng S Y, Zhang N Y 2009 Acta Phys. Sin. 58 291 (in Chinese) [宋洪胜, 程传福, 刘曼, 滕树云, 张宁玉 2009 58 291]
[6] O'Holleran K, Dennis M R, Flossmann F, Padgett M J 2008 Phys. Rev. Lett. 100 053902
[7] Flossmann F, O‘Holleran K, Dennis M R, Padgett M J 2008 Phys. Rev. Lett. 100 203902
[8] Egorov R I, Soskin M S 2008 Phys. Rev. Lett. 100 103901
[9] Soskin M S, Egorov R I, Freund I 2007 Opt. Lett. 32 891
[10] Zhang S, Hu B, Sebbah P, Genack A Z 2007 Phys. Rev. Lett. 99 063902
[11] Zhang S, Genack A Z 2007 Phys. Rev. Lett. 99 203901
[12] Yao H B, Zheng Y J 2011 Acta Phys. Sin. 60 128201 (in Chinese) [姚洪斌, 郑雨军 2011 60 128201]
[13] Zhang N, Bao W X, Yang J H, Zhu X N 2013 Chin. Phys. B 22 054209
[14] Li Z, Zhang J S, Yang J, Gong Q H 2007 Acta Phys. Sin. 56 3630 (in Chinese) [李智, 张家森, 杨景, 龚旗煌 2007 56 3630]
[15] Burresi M, Engelen R J P, Opheij A, van Oosten D, Mori D, Baba T, Kuipers L 2009 Phys. Rev. Lett. 102 033902
[16] Han J L, Zou Q, Teng S Y, Dong Q R, Cheng C F 2006 J. Shandong Normal Univ. (Natural Science) 21 61 (in Chinese) [韩俊玲, 邹倩, 滕树云, 董庆瑞, 程传福 2006 山东师范大学学报(自然科学版) 21 61]
[17] Liu M, Song H S, Chen X Y, Liu G Y, Teng S Y, Cheng C F 2010 Chin. Phys. Lett. 27 034202
[18] Liu G Y, Han J L, Liu M, Teng S Y, Cheng C F 2010 Chin. Phys. Lett. 27 067802
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