A solid state laser system having at least one gas injector is disclosed. The gas injector may be configured to so as cause gas flow in a path of the laser beam in order to mitigate distortion of the laser beam due to optical path difference. Each gas injector may be configured so as to cause gas flow proximate at least one optical surface of a solid state gain element of the laser beam system. In this manner gain uniformity may be enhanced so as to facilitate use of the laser system in a variety of military and commercial applications.