Paul Crump

TL;DR: In this paper, a review of efforts to increase ηE is presented and it is shown that for well-optimized structures, the residual losses are dominated by the p-side waveguide and nonideal internal quantum efficiency.

TL;DR: In this article, the authors investigated the factors that limit both the continuous wave (CW) and the pulsed output power of broad-area laser diodes driven at very high currents and showed that the decrease in the gain due to self-heating under CW operation and spectral hole burning under pulsed operation, as well as heterobarrier carrier leakage and longitudinal spatial hole burning, are the dominant mechanisms limiting the maximum achievable output power.

TL;DR: The EuPRAXIA project aims at the construction of an innovative electron accelerator using laser-and electron-beam-driven plasma wakefield acceleration that offers a significant reduction in size and possible savings in cost over current state-of-the-art radiofrequency-based accelerators as discussed by the authors.

TL;DR: In this paper, spectrally resolved near and far field measurements were performed for a diode laser with 50 µm stripe width, and it was shown that current-induced thermal lensing dominates the lateral waveguiding, in spite of the presence of both strong built-in index guiding and gain guiding.

TL;DR: In this article, the authors investigated the reliability of a single broad area diode laser diode with stripe widths in the 90-100 μm range and showed that it is possible to operate at 20W per emitter for over 4000 hours without failure, with 60μm stripe devices operating reliably at 10W per stripe.