Chinese Journal of Lasers, Volume. 44, Issue 1, 102010(2017)
Femtosecond Laser Fabrication of Two-Dimensional Periodic Composite Structures on Tungsten Surface
We report the fabrication of two-dimensional periodic composite micro- and nano-structures consisting of subwavelength ripples and nanowires on tungsten surface by adjusting femtosecond laser pulse number with either linear or azimuthal polarization in repetitive irradiation. The experiment results show that both the spatial periodicity and ridge width of the subwavelength ripples tend to decrease with the increase of the overlapped pulse number. Femtosecond laser pulses induced metallic nanowires on the sample surface gradually disappear when the overlapped pulse number of femtosecond laser with both polarization states increases. The structured area of the sample surface gradually increases with the increase of overlapped laser pulses number, but the obtained area appears to be saturated when the pulse number reaches up to 150.
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Qiao Hongzhen, Wang Fei, Zhang Nan, Yang Jianjun. Femtosecond Laser Fabrication of Two-Dimensional Periodic Composite Structures on Tungsten Surface[J]. Chinese Journal of Lasers, 2017, 44(1): 102010
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Received: Aug. 8, 2016
Accepted: --
Published Online: Jan. 10, 2017
The Author Email: Hongzhen Qiao (qiaohongzhen@mail.nankai.edu.cn)