Zhao Q, Malzer S, Wang L (2007)
Publication Type: Journal article, Original article
Publication year: 2007
Original Authors: Zhao Q.Z., Malzer S., Wang L.J.
Publisher: Optical Society of America
Book Volume: 32
Pages Range: 1932-1934
Journal Issue: 13
DOI: 10.1364/OL.32.001932
The evolution of surface morphology of tungsten irradiated by single-beam femtosecond laser pulses is investigated. Ripplelike periodic structures have been observed. The period of these ripples does not show a simple relation to the wavelength and angle of incidence. The orientation of ripples is aligned perpendicularly to the direction of polarization for linearly polarized light. Surprisingly, we find that the alignment of the ripple structure turned left or right by 45° with respect to the incident plane when using right and left circularly polarized light, respectively. The period of the ripple can be controlled by the pulse energy, the number of pulses, and the incident angle. We find a clear threshold for the formation as a function of pulse energy and number of pulses. The mechanism for the ripple formation is discussed, as well as potential applications in large-area structuring of metals. © 2007 Optical Society of America.
APA:
Zhao, Q., Malzer, S., & Wang, L. (2007). Formation of subwavelength periodic structures on tungsten induced by ultrashort laser pulses. Optics Letters, 32(13), 1932-1934. https://doi.org/10.1364/OL.32.001932
MLA:
Zhao, Quanzhong, Stefan Malzer, and Lijun Wang. "Formation of subwavelength periodic structures on tungsten induced by ultrashort laser pulses." Optics Letters 32.13 (2007): 1932-1934.
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