Thorlabs provides an extensive line of helium-neon lasers with output powers ranging from 0.5 - 35 mW. In addition to the most commonly used 633 nm lasers, we offer seven other output wavelengths (543, 594, 604, 612, 1520, and 3390 nm) as well as wavelength selectable versions that can be tuned to five different wavelengths using an adjustment screw on the back of the unit.
