We investigate the coupling efficiency of parametric downconversion light (PDC) into single and multi-mode optical fibers as a function of the pump beam diameter, crystal length and walk-off. We outline two different theoretical models for the preparation and collection of either single-mode or multi-mode PDC light (defined by, for instance, multi-mode fibers or apertures, corresponding to buck...

A system for aligning nucleotide or amino acid biosequences is described. The system, called Neweyes, employs a novel string matching algorithm, Running KarpRabin Greedy String Tiling (RKR-GST), which involves tiling one string with matching substrings of a second string. In practice, RKR-GST has a computational complexity that appears close to linear. With RKR-GST, Neweyes is able to detect tr...

This paper investigates the characteristics of the second harmonic generation of Lamb waves in a plate with quadratic nonlinearity. Analytical asymptotic solutions to Lamb waves are first obtained through the use of a perturbation method. Then, based on a careful analysis of these asymptotic solutions, it is shown that the cross-modal generation of a symmetric second harmonic mode by an antisym...

A system for aligning nucleotide or amino acid biosequences is described. The system, called Neweyes, employs a novel string matching algorithm, Running Karp-Rabin Greedy String Tiling (RKR-GST), which involves tiling one string with matching substrings of a second string. In practice, RKR-GST has a computational complexity that appears close to linear. With RKR-GST, Neweyes is able to detect t...