scholarly journals Large-area straight, regular periodic surface structures produced on fused silica by the interference of two femtosecond laser beams through cylindrical lens

2021 ◽  
Vol 4 (12) ◽  
pp. 200036-200036
Author(s):  
Long Chen ◽  
◽  
Kaiqiang Cao ◽  
Yanli Li ◽  
Jukun Liu ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Fused Silica ◽  
Cylindrical Lens ◽  
Surface Structures ◽  
Laser Beams ◽  
Large Area ◽  
Periodic Surface

Maskless formation of uniform subwavelength periodic surface structures by double temporally-delayed femtosecond laser beams

2019 ◽  
Vol 471 ◽  
pp. 516-520 ◽  
Author(s):  
Sohail A. Jalil ◽  
Jianjun Yang ◽  
Mohamed ElKabbash ◽  
Subhash C. Singh ◽  
Chunlei Guo
Keyword(s):  
Femtosecond Laser ◽  
Surface Structures ◽  
Laser Beams ◽  
Periodic Surface

Extremely regular periodic surface structures in a large area efficiently induced on silicon by temporally shaped femtosecond laser

2021 ◽  
Author(s):  
Yuchan Zhang ◽  
Q.L J ◽  
Kaiqiang Cao ◽  
Tianqi Chen ◽  
Chengke No Last Name ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Surface Structures ◽  
Large Area ◽  
Periodic Surface

Regular uniform large-area subwavelength nanogratings fabricated by the interference of two femtosecond laser beams via cylindrical lens

2020 ◽  
Vol 18 (9) ◽  
pp. 093201
Author(s):  
Kaiqiang Cao ◽  
Long Chen ◽  
Ke Cheng ◽  
Zhenrong Sun ◽  
Tianqing Jia
Keyword(s):  
Femtosecond Laser ◽  
Cylindrical Lens ◽  
Laser Beams ◽  
Large Area

scholarly journals Large-Area Fabrication of Laser-Induced Periodic Surface Structures on Fused Silica Using Thin Gold Layers

Nanomaterials ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1187 ◽  
Author(s):  
Clemens Kunz ◽  
Sebastian Engel ◽  
Frank Müller ◽  
Stephan Gräf
Keyword(s):  
Fused Silica ◽  
Surface Structures ◽  
Spatial Period ◽  
Direct Writing ◽  
Large Area ◽  
Periodic Surface ◽  
Single Spot ◽  
Research Activities ◽  
Wide Range ◽  
Fs Laser

Despite intensive research activities in the field of laser-induced periodic surface structures (LIPSS), the large-area nanostructuring of glasses is still a challenging problem, which is mainly caused by the strongly non-linear absorption of the laser radiation by the dielectric material. Therefore, most investigations are limited to single-spot experiments on different types of glasses. Here, we report the homogeneous generation of LIPSS on large-area surfaces of fused silica using thin gold layers and a fs-laser with a wavelength λ = 1025 nm, a pulse duration τ = 300 fs, and a repetition frequency frep = 100 kHz as radiation source. For this purpose, single-spot experiments are performed to study the LIPSS formation process as a function of laser parameters and gold layer thickness. Based on these results, the generation of large-area homogenous LIPSS pattern was investigated by unidirectional scanning of the fs-laser beam across the sample surface using different line spacing. The nanostructures are characterized by a spatial period of about 360 nm and a modulation depth of around 160 nm. Chemical surface analysis by Raman spectroscopy confirms a complete ablation of the gold film by the fs-laser irradiation. The characterization of the functional properties shows an increased transmission of the nanostructured samples accompanied by a noticeable change in the wetting properties, which can be additionally modified within a wide range by silanization. The presented approach enables the reproducible LIPSS-based laser direct-writing of sub-wavelength nanostructures on glasses and thus provides a versatile and flexible tool for novel applications in the fields of optics, microfluidics, and biomaterials.

Large area uniform femtosecond-laser-induced periodic surface structures fabricated on heated LiNbO3:Fe

2021 ◽  
Author(s):  
Yanan Li ◽  
Tianhao Zhang
Keyword(s):  
Femtosecond Laser ◽  
Laser Scanning ◽  
Scanning Speed ◽  
Surface Structures ◽  
Optimum Process ◽  
Large Area ◽  
Periodic Surface ◽  
Laser Fluences ◽  
Fs Laser ◽  
Scanning Irradiation

Abstract The influence of laser fluences and scanning speeds on the morphologies of laser-induced periodic surface structures(LIPSS) on heated LiNbO3:Fe(1000○C) surfaces was investigated under femtosecond(fs) laser scanning irradiation. Laser fluence of 8.5 kJ/m2 and scanning speed of 1 mm/s were found to be optimum process parameters, and large-area fs-LIPSS on LiNbO3:Fe with an area of 8 mm×8 mm were fabricated with these parameters. The wettability of laser-textured LiNbO3:Fe changed to be hydrophilic, and the absorptance was improved substantially in the spectral range of 400-2000 nm. This technique is efficient, and environmentally friendly, which will attract tremendous interest in nano-photoelectron and nano-mechanics.

Gold-film coating assisted femtosecond laser fabrication of large-area, uniform periodic surface structures

2015 ◽  
Vol 54 (6) ◽  
pp. 1314 ◽  
Author(s):  
Pin Feng ◽  
Lan Jiang ◽  
Xin Li ◽  
Wenlong Rong ◽  
Kaihu Zhang ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Gold Film ◽  
Film Coating ◽  
Surface Structures ◽  
Large Area ◽  
Laser Fabrication ◽  
Periodic Surface
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