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2 results on '"nanometric concentric ring structures"'

1. Formation of laser-induced periodic surface nanometric concentric ring structures on silicon surfaces through single-spot irradiation with orthogonally polarized femtosecond laser double-pulse sequences.

Author

Liu, Wei, Hu, Jie, Jiang, Lan, Huang, Ji, Lu, Jiangang, Yin, Jiangang, Qiu, Zhaoling, Liu, Hailin, Li, Chen, Wang, Suocheng, and Wang, Shaojun

Subjects
SILICON surfaces, SURFACE structure, STRUCTURAL colors, IRRADIATION, FEMTOSECOND lasers, LASERS
Abstract

In this study, we report the formation of laser-induced periodic surface nanometric concentric ring structures on silicon surfaces through single-spot irradiation with orthogonally polarized femtosecond laser double-pulse sequences (OP pulses). The period of the ring structures is marginally smaller than the irradiated laser's wavelength, which indicates that the structures are a type of low-spatial-frequency laser-induced periodic surface structures. Regular nanometric concentric ring structures can be formed when the time delay between two subpulses is approximately 1 ps (roughly from 500 fs to 1.5 ps) and the number of laser bursts is approximately 4. The formation mechanism of the concentric ring structures is attributed to the surface wave (i.e., cylindrical wave) stimulated by OP pulses through single-spot irradiation is radially distributed. Large area of concentric ring structures eliminating anisotropy in the generation of structural colors was shown in this paper. [ABSTRACT FROM AUTHOR]

Published
2021
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2. Formation of laser-induced periodic surface nanometric concentric ring structures on silicon surfaces through single-spot irradiation with orthogonally polarized femtosecond laser double-pulse sequences

Author

Shaojun Wang, Hailin Liu, Chen Li, Lan Jiang, Suocheng Wang, Jiangang Lu, Wei Liu, Ji Huang, Qiu Zhaoling, Jie Hu, and Jiangang Yin

Subjects
Surface (mathematics), Materials science, Silicon, QC1-999, Physics::Optics, chemistry.chemical_element, 02 engineering and technology, 01 natural sciences, Double pulse, Concentric ring, law.invention, Nanomaterials, 010309 optics, lsfl, femtosecond laser, law, 0103 physical sciences, Irradiation, Electrical and Electronic Engineering, business.industry, Physics, silicon, nanometric concentric ring structures, 021001 nanoscience & nanotechnology, Laser, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, chemistry, Femtosecond, Optoelectronics, 0210 nano-technology, business, cylindrical wave, Biotechnology
Abstract

In this study, we report the formation of laser-induced periodic surface nanometric concentric ring structures on silicon surfaces through single-spot irradiation with orthogonally polarized femtosecond laser double-pulse sequences (OP pulses). The period of the ring structures is marginally smaller than the irradiated laser’s wavelength, which indicates that the structures are a type of low-spatial-frequency laser-induced periodic surface structures. Regular nanometric concentric ring structures can be formed when the time delay between two subpulses is approximately 1 ps (roughly from 500 fs to 1.5 ps) and the number of laser bursts is approximately 4. The formation mechanism of the concentric ring structures is attributed to the surface wave (i.e., cylindrical wave) stimulated by OP pulses through single-spot irradiation is radially distributed. Large area of concentric ring structures eliminating anisotropy in the generation of structural colors was shown in this paper.

Published
2021

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