A method is presented to accelerate the convergence of finite-lattice sequences to their bulk limit. The calculation of highly accurate estimates of the critical parameters of the bulk system is then possible. Applied to the Hamiltonian version of the 2 3 model (three-state Potts model) in (1 + 1) dimensions, these techniques yield estimates for the exponents -y=1.444*0.001, U-0.8333iO.0003 and a =0.33*0.01. For theZ5model, the presence of a Kosterlitz-Thouless transition is confirmed.

A drill, fill, and plug technique for fabricating laser fusion targets

The effects of the chemical species of host rate-earth ions, melt compositions and growth orientations on the Bi-substitution level and magneto-optic properties of Bi-substituted garnet films grown by liquid-phase epitaxy were examined. For Gd3+ ions, a higher level of Bi substitution was attained than for Y3+ or Lu3+ ions, when garnet films were grown under the same growth conditions. A maximum Faraday rotation coefficient of -2880°/cm at 1.30 µm was observed in the (GdBi)3(FeAlGa)5O12 film with a Bi-substitution level of 1.56 moles per garnet formula unit. The optical absorption coefficient was as small as 1.6 cm-1 in the (GdBi)3(FeAlGa)5O12 film with a Faraday rotation coefficient of -1800°/cm; consequently, a figure of merit of 267°/dB was attained at 1.30 µm.

No abstract

Fine structures in the broadened line of distributed feedback lasers under highspeed direct modulation Appl. Phys. Lett. 45, 820 (1984); 10.1063/1.95430High speed electron optics for direct slice writing