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Review

Generation of Supra-Wavelength Grooves in Femtosecond Laser Surface Structuring of Silicon

by 1,2,* and 1,2,*
1
Dipartimento di Fisica “Ettore Pancini”, Università di Napoli Federico II, Complesso Universitario di Monte S. Angelo, Via Cintia, I-80126 Napoli, Italy
2
Consiglio Nazionale delle Ricerche-SuPerconducting and Other INnovative Materials and Devices Institute (CNR-SPIN), UOS Napoli, Complesso Universitario di Monte S. Angelo, Via Cintia, I-80126 Napoli, Italy
*
Authors to whom correspondence should be addressed.
Nanomaterials 2021, 11(1), 174; https://doi.org/10.3390/nano11010174
Received: 22 December 2020 / Revised: 8 January 2021 / Accepted: 9 January 2021 / Published: 12 January 2021
Extensive research work has been carried out on the generation and application of laser-induced periodic surface structures (LIPSS). LIPSS with a sub-wavelength period generated by femtosecond laser irradiation, generally indicated as ripples, have been extensively investigated. Instead, the other ordered surface structures characterized by a supra-wavelength period, indicated as grooves, have been much less studied. Grooves typically form at larger irradiance levels or for higher number of laser pulses. Here, we report a comprehensive overview of recent investigations on the supra-wavelength grooves formed on crystalline silicon irradiated by femtosecond laser pulses. The authors’ recent experimental work is mainly addressed giving an explicit picture of the grooves generation process, namely illustrating the influence of the various experimental parameters, including, e.g., polarization, wavelength, fluence and repetition rate of the laser beam as well as number of laser pulses hitting the surface of the material. The effect of irradiation of a static or moving target and of the environmental conditions (e.g., vacuum or air ambient) will also be discussed. Finally, possible mechanisms envisaged to explain grooves formation and still open issues are briefly discussed. View Full-Text
Keywords: laser-induced periodic surface structures with supra-wavelength period; femtosecond laser surface processing; laser surface texturing; silicon laser-induced periodic surface structures with supra-wavelength period; femtosecond laser surface processing; laser surface texturing; silicon
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MDPI and ACS Style

Nivas, J.J.; Amoruso, S. Generation of Supra-Wavelength Grooves in Femtosecond Laser Surface Structuring of Silicon. Nanomaterials 2021, 11, 174. https://doi.org/10.3390/nano11010174

AMA Style

Nivas JJ, Amoruso S. Generation of Supra-Wavelength Grooves in Femtosecond Laser Surface Structuring of Silicon. Nanomaterials. 2021; 11(1):174. https://doi.org/10.3390/nano11010174

Chicago/Turabian Style

Nivas, Jijil J., and Salvatore Amoruso. 2021. "Generation of Supra-Wavelength Grooves in Femtosecond Laser Surface Structuring of Silicon" Nanomaterials 11, no. 1: 174. https://doi.org/10.3390/nano11010174

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