Physics
Scientific paper
Apr 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010njph...12d3025l&link_type=abstract
New Journal of Physics, Volume 12, Issue 4, pp. 043025 (2010).
Physics
Scientific paper
A two-dimensional periodic microflower array was fabricated on Al:ZnO thin films by the irradiation of three interfered 800 nm femtosecond laser beams. The petals of the microflowers are ~200 nm in size, and the intervals between the nanopetals are about 100 nm. These values are significantly smaller than the laser wavelength and its diffraction-limited scale. The evolution of microflowers with different laser fluences and irradiation times was analyzed. Theoretical analysis indicates that the interferential intensity and polarization distribution together account for the formation of microflowers with subwavelength petals. Flower periodicity with a period of microns was determined by the interferential intensity distribution, while nanopetal structures and their orientations were attributed to the interferential polarization distribution.
Feng Da Hsuan
He H. Y.
Hou Shimin
Jia T. Q.
Li Xiaoliang
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