Self-adjusting laser–target system for laser fusion

Abstract

The quality of the output beam from a CO2 electron beam laser may be seriously affected by density perturbations within the laser cavity. For the first time in open literature publications, results are given from numerical modelling which indicate that the heating differential between lasing and non-lasing regimes is sufficient to account for these density perturbations. Our numerical results are in good agreement with results from experiment for the case of the stable resonator. We have extended our model to predict the degradation of the output beam from an unstable resonator.

Microwave phase conjugation using antenna arrays

“…1 [1], [2]. This unique property of phase-conjugate waves is useful in many novel applications, including automatic pointing and tracking [3], phase aberration correction [4], and phase-conjugate resonators [5]. To further reveal phase-conjugation properties, let us consider an EM wave propagating along the positive -direction.…”