Optimal absorber thickness in long-wave multiple-stage detector

Bleachable Absorber Laser Amplifier and Detector ( Balad )

This report describes the continued development of the wide-angle, low noise BALAD receiver (Bleachable Absorber Laser Amplifier and Detector). The spatial and frequency resolution of a SF, saturable absorber in a 10.6jj,m BALAD configuration has been measured. The experimental results agree with the theoretical predictions. The components of a Xenon-Xenon 3. 5jim BALAD system have been assembl...

Terahertz electromagnetic-wave detector using Nb-based superconducting tunnel junction on LiNbO3 substrate absorber

We have been developing terahertz (THz) wave detectors using superconducting tunnel junctions (STJs). The STJs consist of the Nb/Al/AlOx/Al/Nb structure. We fabricated THz-wave detectors on LiNbO3 substrates, that have a high absorption coefficient for the frequency range of 10 Hz. Two kinds of signals were detected when the THz-wave was irradiated from the substrate side. One was an indirect s...

Optimal multiple stage expansion of competence set

In this paper, we consider the expansion processes of competence sets which have asymmetric cost functions, intermediate skills, and compound skills; among the skills, cyclic connections are possible. We introduce the concept of the stage expansion process (SEP) of the competence set, and provide mathematical programming methods to ®nd a minimal cost SEP and the ordering of expansion. Ó 2000 El...

GPDM , Particle Filter , Complex Environment , Multiple - Stage HOG Human Detector

A long-wave multiple scattering theory

One of the most successful techniques for handling multiple scattering is the so-called T-matrix approach in which the full linear solution can be computed once it has been determined how each individual element of an array scatters an arbitrary incident field. In the context of water waves this theory was originally formulated in [1] for constant finite depth, and extended to the deep water ca...