High-power Al-free coherent and incoherent diode lasers

Summary form only given. Al-free diode lasers are experiencing a veritable revolution due to several key advantages over their Al-containing counterparts: 1) vastly enhanced reliability for wavelengths below 0.82 /spl mu/m; 2) lower series resistances leading to higher wallplug efficiencies; and 3) ease of regrowth(s) needed for spatial- and frequency-mode control.