TY - JOUR
T1 - Evolution of femtosecond laser-induced surface ripples on lithium niobate crystal surfaces
AU - Shimizu, Hisashi
AU - Obara, Go
AU - Terakawa, Mitsuhiro
AU - Mazur, Eric
AU - Obara, Minoru
PY - 2013/11
Y1 - 2013/11
N2 - We fabricated periodic ripple structures on the surface of a lithium niobate crystal by irradiation with femtosecond laser pulses and observed the evolution of these structures under irradiation with successive laser pulses. After just a few laser pulses we observed nanorod-shaped craters, aligned with each other but randomly distributed over the surface. The nanocraters are caused by nanoablation at defects in the crystal surface. With increasing pulse number, side-lobed nanocraters appear and light scattered from the initial nanorod-shaped craters at the crystal surface interferes with the incident light, causing the formation of periodic structures.
AB - We fabricated periodic ripple structures on the surface of a lithium niobate crystal by irradiation with femtosecond laser pulses and observed the evolution of these structures under irradiation with successive laser pulses. After just a few laser pulses we observed nanorod-shaped craters, aligned with each other but randomly distributed over the surface. The nanocraters are caused by nanoablation at defects in the crystal surface. With increasing pulse number, side-lobed nanocraters appear and light scattered from the initial nanorod-shaped craters at the crystal surface interferes with the incident light, causing the formation of periodic structures.
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U2 - 10.7567/APEX.6.112701
DO - 10.7567/APEX.6.112701
M3 - Article
AN - SCOPUS:84887787595
SN - 1882-0778
VL - 6
JO - Applied Physics Express
JF - Applied Physics Express
IS - 11
M1 - 112701
ER -