Phase‐locked semiconductor laser array with separate contacts

Dynamics of a semiconductor laser array with delayed global coupling.

We study the dynamics of an array of single mode semiconductor lasers globally but weakly coupled by a common external feedback mirror and by nearest neighbor interactions. We seek to determine the conditions under which all lasers of the array are in phase, whether in a steady, periodic, quasiperiodic, or chaotic regime, in order to maximize the output far field intensity. We show that the del...

A Parallel Q-Method for a Semiconductor Laser Array Model

A time-dependent, two-dimensional model of a semiconductor laser array is numerically studied by means of Θand Newton-Raphson methods. A parallel version of the BiCGSTAB algorithm for the solution of the linear equations resulting from the Newton-Raphson technique is presented. It is shown that the proposed method reduces by half the number of messages and, by means of communications overlappin...

Efficient Parallel Solution of a Semiconductor Laser Array Dynamics Model

Communication overhead on parallel applications is usually the most important handicap to reach a perfect speedup. The reduction of both the number and the size of messages has been the common direction of both programmers and parallelizing compilers. However, the appearance of new parallel computers allowing for the overlap of computations and communications has opened new ways to do research....

Josephson Current in a Ferromagnetic Semiconductor/Semiconductor/Ferromagnetic Semiconductor Junction with Superconducting Contacts

Germanium Orthogonal Strip Detectors with Amorphous-Semiconductor Contacts

Germanium orthogonal strip detectors have been produced using amorphous-semiconductor contacts. The amorphoussemiconductor contact fabrication process is relatively simple, and it is capable of producing fine-pitched electrode structures. The bipolar blocking behavior of the amorphoussemiconductor contact permits its use on both sides of a detector, replacing conventional B ion implanted and Li...