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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 29, Iss. 9 — Sep. 1, 2012
  • pp: 2282–2287

Self-formed two-dimensional near-wavelength microstructures on copper induced by multipulse femtosecond vector optical fields

Kai Lou, Sheng-Xia Qian, Zhi-Cheng Ren, Xi-Lin Wang, Yongnan Li, Chenghou Tu, and Hui-Tian Wang  »View Author Affiliations


JOSA B, Vol. 29, Issue 9, pp. 2282-2287 (2012)
http://dx.doi.org/10.1364/JOSAB.29.002282


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Abstract

Two-dimensional near-wavelength microstructures have been fabricated on copper film by femtosecond vector optical fields with different spatial polarization distribution, at a central wavelength of 800 nm, a pulse duration of 70fs, and a repetition rate of 1 kHz. In the induced microstructures, fine structures with interperpendicular orientations have been observed under the irradiation of a few pulses. Under the irradiation of the multipulse femtosecond vector field, differently from on the dielectric and semiconductor surfaces, the induced microstructures on the metallic copper surface exhibit an anisotropic extending feature dependent on the polarization distribution of the vector field. The physics behind this unique feature are the anisotropic excitation and propagation of surface plasmons, caused by the coupling of the subsequent irradiation pulses with the existing microstructure.

© 2012 Optical Society of America

OCIS Codes
(190.4180) Nonlinear optics : Multiphoton processes
(240.6680) Optics at surfaces : Surface plasmons
(260.5430) Physical optics : Polarization
(320.2250) Ultrafast optics : Femtosecond phenomena
(050.6624) Diffraction and gratings : Subwavelength structures

ToC Category:
Ultrafast Optics

History
Original Manuscript: March 15, 2012
Revised Manuscript: July 1, 2012
Manuscript Accepted: July 1, 2012
Published: August 3, 2012

Citation
Kai Lou, Sheng-Xia Qian, Zhi-Cheng Ren, Xi-Lin Wang, Yongnan Li, Chenghou Tu, and Hui-Tian Wang, "Self-formed two-dimensional near-wavelength microstructures on copper induced by multipulse femtosecond vector optical fields," J. Opt. Soc. Am. B 29, 2282-2287 (2012)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-29-9-2282

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