Laser arrays have been fabricated with silicon-impurityinduced disordered nonabsorbing mirrors (windows) to enhance the maximum CW power output. The power output was thermally limited for a 100 μm-aperture device to 2.4 W CW while catastrophic failure occurred under pulsed conditions at 3.5 W in a 100 μs pulse and increased to 22 W for a 50 ns pulse. The emission wavelength of these diodes is 770 nm.