Read e-book online 3D Laser Microfabrication: Principles and Applications PDF

By Sami Franssila

ISBN-10: 0470851058

ISBN-13: 9780470851050

An intensive advent to 3D laser microfabrication expertise, prime readers from the basics and conception to its numerous powerful purposes, equivalent to the iteration of tiny items or third-dimensional buildings in the bulk of obvious materials.The publication additionally offers new theoretical fabric on dielectric breakdown, permitting a greater figuring out of the variations among optical harm on surfaces and contained in the bulk, in addition to a glance into the future.Chemists, physicists, fabrics scientists and engineers will locate this a beneficial resource of interdisciplinary wisdom within the box of laser optics and nanotechnology.

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Recombination time is around 1 picosecond in fused silica in accordance with [23]. 21 22 2 Laser–Matter Interaction Confined Inside the Bulk of a Transparent Solid Solutions of the rate equation in different conditions and for different materials [23, 25, 29] allow an estimate the relative role and interplay of the impact and multi-photon ionisation. The solution to Eq. (29) with the initial condition ne(t = 0) = n0 and under assumption that wimp and wmpi are the time independent, is the following: ( )  i   na wmpi h ne ðI; k; tÞ ¼ n0 þ 1 À exp Àwimp t exp wimp t (30) wimp The importance of multi-photon ionization at low intensity is clear from (30) even when the avalanche dominates.

1 The Heat-affected Zone from the Action of Many Consecutive Pulses Let us first consider consecutive heating assuming that the laser-affected region comprises a zone affected by the sum of heat waves produced by the successive pulses. We assume that there are negligible losses between the pulses. This is particularly true when the period between successive pulses is short compared with the cooling time as is the case when 10–100 MHz repetition-rate lasers are used. In the case of N pulses hitting the same place, the absorption energy can be approximated by EN = NEa.

Galstian, and A. Vill- neuve, Optical-field induced mass transport in As2S3 chalcogenide glasses, Phys. Rev. Lett. 85, 4112–4115, (2000). A. M. Rentzepis, Three-dimensional optical storage memory, Science, 245, 843 (1989). 15 W. H. W. Webb, Two-photon laser scanning fluorescence microscopy, Science, 248, 73 (1990). H. W. Webb, Threedimensional optical data storage in refractive media by two-photon point excitation, Optics Letters, 16, 1780 (1991). 17 M. Miwa, S. Juodkazis, T. Kawakami, S. Matsuo, H.

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3D Laser Microfabrication: Principles and Applications by Sami Franssila


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