High-power high-brightness 1.93-m wavelength (AlGaIn)(AsSb) tapered diode lasers with a narrow vertical waveguide design are reported for the first time. A nearly diffraction-limited continuous-wave output power of 1.5 W together with a remarkable low fast axis divergence of 43 full-width at half-maximum have been demonstrated. The maximum brightness amounts to 32 MW/cm 2 sr.