Microsized structures assisted nanostructure formation on ZnSe wafer by femtosecond laser irradiation

Journal Article · Mon Dec 22 00:00:00 EST 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4904998· OSTI ID:22395590

Wang, Shutong; Feng, Guoying ^[1]; Zhou, Shouhuan ^[1]

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1. Institute of Laser and Micro/Nano Engineering, College of Electronics and Information Engineering, Sichuan University, Chengdu 610064 (China)

Micro/nano patterning of ZnSe wafer is demonstrated by femtosecond laser irradiation through a diffracting pinhole. The irradiation results obtained at fluences above the ablation threshold are characterized by scanning electron microscopy. The microsized structure with low spatial frequency has a good agreement with Fresnel diffraction theory. Laser induced periodic surface structures and laser-induced periodic curvelet surface structures with high spatial frequency have been found on the surfaces of microsized structures, such as spikes and valleys. We interpret its formation in terms of the interference between the reflected laser field on the surface of the valley and the incident laser pulse.

• OSTI ID: 22395590
• Journal Information: Applied Physics Letters, Vol. 105, Issue 25; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABLATION
DIFFRACTION
INTERFERENCE
LASER RADIATION
MICROSTRUCTURE
NANOSTRUCTURES
PERIODICITY
PULSED IRRADIATION
SCANNING ELECTRON MICROSCOPY
SURFACES
ZINC SELENIDES