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The time- and space-resolved optical emission spectra (OES) of Si plasma produced by femtosecond laser pulse with center wavelength of 800 nm and pulse width of 100 fs in air were investigated. The results show that the OES mainly consist of continuous spectrum at the early stage of plasma expansion (within the first 50 ns), then the continuous spectrum weakens gradually while the line spectrum becomes dominating. The existence time of ion spectra is shorter than that of atomic spectra in the process of plume expansion. The wavelength red-shift, which has a second order exponential decay with delay time, has been found by the time-resolved emission spectroscopy. Finally, the spatiotemporal evolution of OES intensity are presented.
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Keywords:
- femtosecond laser /
- pulsed laser ablation /
- plasma /
- optical emission spectroscopy
[1] Yang J J, Liu W W, Zhu X N 2007 Chin. Phys. 16 2003
[2] Amoruso S, Bruzzese R, Spinelli N, Velotta R, Vitiello M, Wang X, Ausanio G, Iannotti V, Lanotte L 2004 Appl. Phys. Lett. 84 4502
[3] Li Y P, Liu Z T 2009 Acta Phys. Sin. 58 5022 (in Chinese) [李阳平、 刘正堂 2009 58 5022]
[4] Perriere J, Boulmer-Leborgne C, Benzerga R, Tricot S 2007 J. Phys. D: Appl. Phys. 40 7069
[5] Vorobyev A Y, Makin V S, Guo C L 2009 Phys. Rev. Lett. 102 234301
[6] Her T H, Finlay R J, Wu C, Deliwala S, Mazur E 1998 Appl. Phys. Lett. 73 1673
[7] Huang Q J 2008 Acta Phys. Sin. 57 2314 (in Chinese) [黄庆举 2008 57 2314]
[8] Hafez M A, Khedr M A, Elaksher F F, Gamal Y E 2003 Plasma Sources Sci. Tech. 12 185
[9] Man B Y, Dong Q L, Liu A H, Wei X Q, Zhang Q G, He J L, Wang X T 2004 J. Opt. A: Pure Appl. Opt. 6 17
[10] Camacho J J, Diaz L, Santos M, Reyman D, Poyato J M L 2008 J. Phys. D: Appl. Phys. 41 105201
[11] Guillermin M, Liebig C, Garrelie F, Stoian R, Loir A S, Audouard E 2009 Appl. Surf. Sci. 255 5163
[12] Hu H F, Wang X L, Li Z L, Zhang N, Zhai H C 2009 Acta Phys. Sin. 58 7662 (in Chinese) [胡浩丰、 王晓雷、 李智磊、 张 楠、 翟宏琛 2009 58 7662]
[13] Yamagata Y, Sharma A, Narayan J, Mayo R M, Newman J W, Ebihara K 1999 J. Appl. Phys. 86 4154
[14] Hong M H, Lu Y F, Bong S K 2000 Appl. Surf. Sci. 154—155 196
[15] Chen C S, Zhou X L, Man B Y, Zhang Y Q, Guo J 2009 Optik 120 473
[16] Junkel G C, Gunderson M A, Hooper C F 2000 Phys. Rev. E 62 5584
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[1] Yang J J, Liu W W, Zhu X N 2007 Chin. Phys. 16 2003
[2] Amoruso S, Bruzzese R, Spinelli N, Velotta R, Vitiello M, Wang X, Ausanio G, Iannotti V, Lanotte L 2004 Appl. Phys. Lett. 84 4502
[3] Li Y P, Liu Z T 2009 Acta Phys. Sin. 58 5022 (in Chinese) [李阳平、 刘正堂 2009 58 5022]
[4] Perriere J, Boulmer-Leborgne C, Benzerga R, Tricot S 2007 J. Phys. D: Appl. Phys. 40 7069
[5] Vorobyev A Y, Makin V S, Guo C L 2009 Phys. Rev. Lett. 102 234301
[6] Her T H, Finlay R J, Wu C, Deliwala S, Mazur E 1998 Appl. Phys. Lett. 73 1673
[7] Huang Q J 2008 Acta Phys. Sin. 57 2314 (in Chinese) [黄庆举 2008 57 2314]
[8] Hafez M A, Khedr M A, Elaksher F F, Gamal Y E 2003 Plasma Sources Sci. Tech. 12 185
[9] Man B Y, Dong Q L, Liu A H, Wei X Q, Zhang Q G, He J L, Wang X T 2004 J. Opt. A: Pure Appl. Opt. 6 17
[10] Camacho J J, Diaz L, Santos M, Reyman D, Poyato J M L 2008 J. Phys. D: Appl. Phys. 41 105201
[11] Guillermin M, Liebig C, Garrelie F, Stoian R, Loir A S, Audouard E 2009 Appl. Surf. Sci. 255 5163
[12] Hu H F, Wang X L, Li Z L, Zhang N, Zhai H C 2009 Acta Phys. Sin. 58 7662 (in Chinese) [胡浩丰、 王晓雷、 李智磊、 张 楠、 翟宏琛 2009 58 7662]
[13] Yamagata Y, Sharma A, Narayan J, Mayo R M, Newman J W, Ebihara K 1999 J. Appl. Phys. 86 4154
[14] Hong M H, Lu Y F, Bong S K 2000 Appl. Surf. Sci. 154—155 196
[15] Chen C S, Zhou X L, Man B Y, Zhang Y Q, Guo J 2009 Optik 120 473
[16] Junkel G C, Gunderson M A, Hooper C F 2000 Phys. Rev. E 62 5584
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