title: Optical transmission and laser structuring of silicon membranes.
abstract: The optical linear and nonlinear properties of ~ 340-nm thick Si membranes were investigated. The investigation included both experiments in which the reflection and transmission from the membranes were measured, and finite differences time domain simulations. The linear optical transmission of the Si membranes can be controlled by changing the thickness of a thermally grown oxide on the membrane. Illumination of the membranes with high levels of irradiation leads to optical modifications that are consistent with the formation of amorphous silicon and dielectric breakdown. When irradiated under conditions where dielectric breakdown occurs, the membranes can be ablated in a well-controlled manner. Laser micro-structuring of the membranes by ablation was carried out to make micrometer-sized holes by focused fs-pulses. Ns-pulses were also used to fabricate arrays of holes by proximity-ablation of a closely-packed pattern of colloidal particles.
authors.affiliation: Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan. saulius@es.hokudai.ac.jp
authors.forename: Saulius
authors.initials: S
authors.lastname: Juodkazis
authors.forename: Yasufumi
authors.initials: Y
authors.lastname: Nishi
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Misawa
authors.forename: Vygantas
authors.initials: V
authors.lastname: Mizeikis
authors.forename: Olivier
authors.initials: O
authors.lastname: Schecker
authors.forename: Reimar
authors.initials: R
authors.lastname: Waitz
authors.forename: Paul
authors.initials: P
authors.lastname: Leiderer
authors.forename: Elke
authors.initials: E
authors.lastname: Scheer
mesh_terms: D003102:Colloids / Q000737:chemistry; D003198:Computer Simulation; D007834:Lasers; D008567:Membranes, Artificial; D046210:Microfluidic Analytical Techniques; D044085:Microfluidics; D008855:Microscopy, Electron, Scanning / Q000379:methods; D008863:Microspheres; D055100:Optical Fibers; D055095:Optics and Photonics; D012666:Semiconductors; D012825:Silicon / Q000737:chemistry*
chemical_list: D003102:Colloids; D008567:Membranes, Artificial; D012825:Silicon