skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Direct femtosecond laser ablation of copper with an optical vortex beam

Abstract

Laser surface structuring of copper is induced by laser ablation with a femtosecond optical vortex beam generated via spin-to-orbital conversion of the angular momentum of light by using a q-plate. The variation of the produced surface structures is studied as a function of the number of pulses, N, and laser fluence, F. After the first laser pulse (N=1), the irradiated surface presents an annular region characterized by a corrugated morphology made by a rather complex network of nanometer-scale ridges, wrinkles, pores, and cavities. Increasing the number of pulses (21000) and a deep crater is formed. The nanostructure variation with the laser fluence, F, also evidences an interesting dependence, with a coarsening of the structure morphology as F increases. Our experimental findings demonstrate that direct femtosecond laser ablation with optical vortex beams produces interesting patterns not achievable by the more standard beams with a Gaussian intensity profile. They also suggest that appropriate tuning of the experimental conditions (F, N) can allow generating micro- and/or nano-structured surface for any specific application.

Authors:
; ; ; ;  [1];  [2]; ;  [3]; ;  [4]
  1. Dipartimento di Fisica, Università di Napoli Federico II, Complesso Universitario di Monte S. Angelo, Via Cintia, I-80126 Napoli (Italy)
  2. (Italy)
  3. CNR-SPIN, UOS Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano (Italy)
  4. CNR-SPIN, UOS Napoli, Complesso Universitario di Monte S. Angelo, Via Cintia, I-80126 Napoli (Italy)
Publication Date:
OSTI Identifier:
22305980
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 116; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABLATION; BEAMS; COPPER; CRATERS; LASER RADIATION; NANOPARTICLES; NANOSTRUCTURES; PULSES; SPIN; SURFACES; TEXTURE; VISIBLE RADIATION

Citation Formats

Anoop, K. K., Rubano, A., Marrucci, L., Bruzzese, R., Amoruso, S., E-mail: amoruso@na.infn.it, CNR-SPIN, UOS Napoli, Complesso Universitario di Monte S. Angelo, Via Cintia, I-80126 Napoli, Fittipaldi, R., Vecchione, A., Wang, X., and Paparo, D. Direct femtosecond laser ablation of copper with an optical vortex beam. United States: N. p., 2014. Web. doi:10.1063/1.4896068.
Anoop, K. K., Rubano, A., Marrucci, L., Bruzzese, R., Amoruso, S., E-mail: amoruso@na.infn.it, CNR-SPIN, UOS Napoli, Complesso Universitario di Monte S. Angelo, Via Cintia, I-80126 Napoli, Fittipaldi, R., Vecchione, A., Wang, X., & Paparo, D. Direct femtosecond laser ablation of copper with an optical vortex beam. United States. doi:10.1063/1.4896068.
Anoop, K. K., Rubano, A., Marrucci, L., Bruzzese, R., Amoruso, S., E-mail: amoruso@na.infn.it, CNR-SPIN, UOS Napoli, Complesso Universitario di Monte S. Angelo, Via Cintia, I-80126 Napoli, Fittipaldi, R., Vecchione, A., Wang, X., and Paparo, D. Sun . "Direct femtosecond laser ablation of copper with an optical vortex beam". United States. doi:10.1063/1.4896068.
@article{osti_22305980,
title = {Direct femtosecond laser ablation of copper with an optical vortex beam},
author = {Anoop, K. K. and Rubano, A. and Marrucci, L. and Bruzzese, R. and Amoruso, S., E-mail: amoruso@na.infn.it and CNR-SPIN, UOS Napoli, Complesso Universitario di Monte S. Angelo, Via Cintia, I-80126 Napoli and Fittipaldi, R. and Vecchione, A. and Wang, X. and Paparo, D.},
abstractNote = {Laser surface structuring of copper is induced by laser ablation with a femtosecond optical vortex beam generated via spin-to-orbital conversion of the angular momentum of light by using a q-plate. The variation of the produced surface structures is studied as a function of the number of pulses, N, and laser fluence, F. After the first laser pulse (N=1), the irradiated surface presents an annular region characterized by a corrugated morphology made by a rather complex network of nanometer-scale ridges, wrinkles, pores, and cavities. Increasing the number of pulses (21000) and a deep crater is formed. The nanostructure variation with the laser fluence, F, also evidences an interesting dependence, with a coarsening of the structure morphology as F increases. Our experimental findings demonstrate that direct femtosecond laser ablation with optical vortex beams produces interesting patterns not achievable by the more standard beams with a Gaussian intensity profile. They also suggest that appropriate tuning of the experimental conditions (F, N) can allow generating micro- and/or nano-structured surface for any specific application.},
doi = {10.1063/1.4896068},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 11,
volume = 116,
place = {United States},
year = {2014},
month = {9}
}