Suitable for laser-pumping and materials-processing applications, nLight Photonics' high-power stacked diode bar modules are water-cooled to maximize output power without sacrificing the lifetime of the diode, the company says. Available in 780- to 1000-nm and 1300- to 1700-nm wavelengths, one to 20 bars can be placed in a single vertical stacked array. Multiple stacks can be placed adjacent to one another to provide 2-D arrays with multikilowatt levels. They can be used with the company's lensing capabilities to collimate the fast axis to a divergence of <0.25° FWHM. Slow axis collimation is available.