Title :
Evidence for non-mass-transfer mechanism in fs-laser formation of sub-200 nm structures on sapphire
Author :
Das, Susanta Kumar ; G?¼ell, Frank ; Messaoudi, Hamza ; Bock, Martin ; Grunwald, Ruediger
Author_Institution :
Max Born Inst. for Nonlinear Opt. & Short-Pulse Spectrosc., Berlin, Germany
Abstract :
Femtosecond-laser induced generation of sub-200 nm structures in Al2O3 is reported. Comparison of experiment to theory favors periodical fluence variation while excluding self-organized mass transfer as responsible mechanism for structure formation.
Keywords :
high-speed optical techniques; laser materials processing; mass transfer; nanofabrication; nanostructured materials; sapphire; Al2O3; femtosecond-laser induced generation; fs-laser formation; nonmass-transfer mechanism; self-organized mass transfer; size 200 nm; structure formation; Equations; Laser theory; Mathematical model; Nanostructures; Periodic structures; Refractive index; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2012 Conference on
Print_ISBN :
978-1-4673-1839-6
