New PDF release: 3D laser microfabrication : principles and applications

By Hiroaki Misawa, Saulius Juodkazis

A radical creation to 3D laser microfabrication know-how, prime readers from the basics and thought to its a variety of powerful functions, equivalent to the new release of tiny gadgets or 3-dimensional constructions in the bulk of obvious fabrics. The ebook additionally offers new theoretical fabric on dielectric breakdown, permitting a greater realizing of the variations among optical harm on surfaces and contained in the bulk, in addition to a glance into the longer term. Chemists, physicists, fabrics scientists and engineers will locate this a worthy resource of interdisciplinary wisdom within the box of laser optics and nanotechnology.

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The dielectric function of plasma can be properly described in the Drude approximation when the ions are considered as a neutralizing background [5]: e¼1À x2p x2 þ v2eff þi x2p x2 þ v2eff veff ” e¢ þ ie† x (31) Here the electron plasma frequency, xp, is an explicit function of the number density of the conductivity electrons, ne, and the electron effective mass, m*, x2p ¼ 4p e2 ne =m*. One can estimate the optical parameters of this plasma, assuming that the effective collision frequency is approximately equal to the plasma frequency, meff ~ xp, for the nonideal plasma which is created.

82, 3883–3886 (1999). 31 L. Sudrie, A. Couairon, M. Franko, B. Lamouroux, B. Prade, S. Tzortzakis and A. Mysyrovicz, Femtosecond laserInduced Damage and Filamentary Propa- 32 33 34 35 36 37 38 39 40 gation in Fused silica, Phys. Rev. , 89, 186601-1 (2002). W. B. M. D. G. Demos, Localized dynamics during laser-induced damage in optical materials, Phys. Rev. , 92, 087401-1 (2004). J. R. Oppenheimer, Three notes on the quantum theory of a periodic effect, Phys. , 31, 66 (1928). V. Keldysh, Ionization in the field of a strong electro-magnetic wave, Sov.

67 ” 10–12 s. The shock wave leaves the heat wave behind at the time when electrons transfer their energy to ions. This time comprises ten = (men)–1 = 200 picoseconds. 22 T0. 74 ” 1011 Pa. This pressure considerably exceeds the cold silica modulus which is of the order of P0 ~ 1010 Pa. Therefore, a strong shock wave emerges, which compresses the material up to a density q ~ q0 (c + 1)/(c – 1) ~ 2q0 (c ~ 3 is the adiabatic constant for cold glass). 4 Laser–Solid Interaction at High Intensity The material behind the shock wavefront can be compressed and transformed to another phase state in such high-pressure conditions.

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