The Excelsior® 642 low-power continuous wave (CW) direct diode 642 nm laser features 100 mW of power. Wavelengths are generated directly from a semiconductor gain chip to reduce operational costs, increase lifetime use, and minimize space requirements. Excelsior direct diode lasers offer a choice of elliptical or collimated (circular) output beam configurations. Excelsior lasers provide state-of-the-art performance with the smallest footprint in their class.