TY - JOUR
T1 - Formation mechanisms of sub-wavelength ripples during femtosecond laser pulse train processing of dielectrics
AU - Yuan, Yanping
AU - Jiang, Lan
AU - Li, Xin
AU - Wang, Cong
AU - Xiao, Hai
AU - Lu, Yongfeng
AU - Tsai, Hailung
PY - 2012/5/2
Y1 - 2012/5/2
N2 - A new model is proposed to investigate femtosecond laser pulse train processing of dielectrics by including the laser wave properties in the photon particle properties based plasma model. In the case studies, the pulse duration is 50fs and the pulse delays are 0, 25, 50 and 75fs. Both the laser waveparticle duality and transient localized changes of material properties are considered in the proposed model, and the formation mechanism of sub-wavelength ripples is revealed. This study shows that the interference between surface plasmons and laser field plays a key role in the formation of sub-wavelength ripples for which the excitation of surface plasmons is necessary. The predicted period of sub-wavelength ripples is in agreement with the experiments.
AB - A new model is proposed to investigate femtosecond laser pulse train processing of dielectrics by including the laser wave properties in the photon particle properties based plasma model. In the case studies, the pulse duration is 50fs and the pulse delays are 0, 25, 50 and 75fs. Both the laser waveparticle duality and transient localized changes of material properties are considered in the proposed model, and the formation mechanism of sub-wavelength ripples is revealed. This study shows that the interference between surface plasmons and laser field plays a key role in the formation of sub-wavelength ripples for which the excitation of surface plasmons is necessary. The predicted period of sub-wavelength ripples is in agreement with the experiments.
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U2 - 10.1088/0022-3727/45/17/175301
DO - 10.1088/0022-3727/45/17/175301
M3 - Article
AN - SCOPUS:84859776102
SN - 0022-3727
VL - 45
JO - Journal of Physics D: Applied Physics
JF - Journal of Physics D: Applied Physics
IS - 17
M1 - 175301
ER -