Improvement to the Lateral Mode Stability in High-Power Laser Diodes by Multistripe-Gain Distribution

Wide-stripe design for high-power laser diodes (LDs) permits multilateral-mode optical field distribution and the formation of an unstable filament pattern within the active waveguide. This is a serious drawback leading to a decrease in the emitted beam quality. The filaments cause spatial and time fluctuations in the LDs near- and far-field (FF) characteristics due to their random nature. The mul...