Subwavelength ripple formation induced by tightly focused femtosecond laser radiation
Subwavelength ripple formation induced by tightly focused femtosecond laser radiation
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DOI：
10.1016/j.apsusc.2005.11.077
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发表时间：
2006-10
影响因子：
6.7
通讯作者：
R. Wagner;J. Gottmann;A. Horn;E. Kreutz
中科院分区：
文献类型：
--
作者：
R. Wagner;J. Gottmann;A. Horn;E. Kreutz
Subwavelength ripples (<λ/4) are obtained by scanning a tightly focused beam (∼1μm) of femtosecond laser radiation (λ=800nm, tp=100fs) over the surface of either bulk fused silica and silicon and Er:BaTiO3. The ripple pattern extends coherently over many overlapping laser pulses parallel and perpendicular to the polarisation. Investigated are the dependence of the ripple spacing on the spacing of successive pulses, the direction of polarisation and the material. The evolution of the ripples is investigated by applying pulse bursts with N=1 to 20 pulses. The conditions under which these phenomena occur are specified, and some possible mechanisms of ripple growth are discussed. Potential applications are presented.
