Flared oscillator waveguide diodes (FLOW-diodes) enable high brightness fiber-coupled modules

Broad area lasers having narrower rear-facet width compared to front-facet have been fabricated to achieve suppression of higher order mode in the lateral direction. Consequently, slow-axis divergence has been reduced by over two times at current density >3kA/cm
²
making possible fiber-coupled power >200 W from 105μm and 0.15NA beam.