Direct femtosecond laser surface structuring of crystalline silicon at 400 nm

Nivas, Jijil JJ ; Anoop, K. K. ; Bruzzese, Riccardo ; Philip, Reji ; Amoruso, Salvatore (2018) Direct femtosecond laser surface structuring of crystalline silicon at 400 nm Applied Physics Letters, 112 (12). p. 121601. ISSN 0003-6951

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Official URL: http://doi.org/10.1063/1.5011134

Related URL: http://dx.doi.org/10.1063/1.5011134

Abstract

We have analyzed the effects of the laser pulse wavelength (400 nm) on femtosecond laser surface structuring of silicon. The features of the produced surface structures are investigated as a function of the number of pulses, N, and compared with the surface textures produced by more standard near-infrared (800 nm) laser pulses at a similar level of excitation. Our experimental findings highlight the importance of the light wavelength for the formation of the supra-wavelength grooves, and, for a large number of pulses (N ≈ 1000), the generation of other periodic structures (stripes) at 400 nm, which are not observed at 800 nm. These results provide interesting information on the generation of various surface textures, addressing the effect of the laser pulse wavelength on the generation of grooves and stripes.

Item Type:Article
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ID Code:121045
Deposited On:08 Jul 2021 12:39
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