|ARCs™ are a family of compact, state-of-the-art, Raman Convertors capable of extending the tuning range of Light Age PAL™ (alexandrite) lasers, and most other pulsed lasers, into the UV, Visible and IR. A unique gas recirculation system minimizes thermo-optic effects, permitting operation at power levels otherwise unachievable. Operation of this unit is straight forward. Once the pressure of the gas and focal conditions are set, there are no adjustments to make, not even when the pump Laser tunes. The only alignment is simple bore-sighting through the aperture of the Convertor. If desired, the output frequencies can be separated using dichroic or dispersive optics. By varying pressure, focal conditions, and other characteristic, output into the various Raman orders can be optimized. The Light Age ARC™ Raman Convertor permits quick and easy modification of those parameters.