Fluid laser flow channel liner

Abstract From the Canadian patent

A fluid laser having a flow channel between fluid inlet and active lasing region which reduces medium heating and resulting medium disturbances. The channel includes a thin optically transparent, thermally insulating layer directly bordering the medium. The thin layer rests upon a metallic heat sink, typically cooled, which receives and removes radiated energy from the active region preventing it from, heating the medium. The thin insulating layer permits the heat sink to be cooler than the medium without causing thermal effects in the medium. The more homogeneous medium resulting from such treatment contributes to better laser beam quality.