Femtosecond laser-induced periodic surface structure formation on tungsten
Journal Article
·
· Journal of Applied Physics
- Institute of Optics, University of Rochester, Rochester, New York 14627 (United States)
In this paper, we demonstrate the generation of periodic surface structures on a technologically important material, tungsten, at both 400 and 800 nm, despite that the table values of dielectric constants for tungsten at these two wavelengths suggest the absence of surface plasmons, a wave necessary for forming periodic structures on metals. Furthermore, we find that the structure periods formed on tungsten are significantly less than the laser wavelengths. We believe that the dielectric constants of tungsten change significantly due to intense laser pulse heating and surface structuring and roughening at nanometer scales, permitting surface plasmon excitation and periodic structure formation.
- OSTI ID:
- 21182629
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 6 Vol. 104; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
Similar Records
On the role of surface plasmon polaritons in the formation of laser-induced periodic surface structures upon irradiation of silicon by femtosecond-laser pulses
Direct writing of continuous and discontinuous sub-wavelength periodic surface structures on single-crystalline silicon using femtosecond laser
Polarization dependent formation of femtosecond laser-induced periodic surface structures near stepped features
Journal Article
·
Sat Nov 14 23:00:00 EST 2009
· Journal of Applied Physics
·
OSTI ID:21361941
Direct writing of continuous and discontinuous sub-wavelength periodic surface structures on single-crystalline silicon using femtosecond laser
Journal Article
·
Mon Jun 02 00:00:00 EDT 2014
· Applied Physics Letters
·
OSTI ID:22300080
Polarization dependent formation of femtosecond laser-induced periodic surface structures near stepped features
Journal Article
·
Mon Jun 09 00:00:00 EDT 2014
· Applied Physics Letters
·
OSTI ID:22299998