Laser resonator
AssigneeFraunhoefer-Gesellschaft zur Foerderung der Angewandten Forschung e.V.
InventorsKeming Du, Peter Loosen
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Abstract
Laser resonator, particularly for carbon dioxide lasers, with two resonator nd mirrors having active material between two fully reflecting end mirror faces, which form an unstable resonator cavity, and with at least one third, completely reflecting mirror face reflecting the laser radiation prior to its coupling out through a coupling-out opening of the resonator. So that the laser only requires a reduced degree of coupling out and/or has an improved beam quality, it is constructed in such a way that, in addition to the unstable resonator cavity, between the two end mirrors is provided at least one stable resonator cavity and that the stable resonator cavity is made from the same active material of the third mirror face as the face of one of the two end mirrors with the face of the other end mirror.
Claims11
A laser resonator for a carbon dioxide laser, comprising two resonator mirrors placed on ends of an excitable active medium, at least one of the resonator mirrors having at least two fully reflecting surface zones with different curvature radii, wherein, between the two resonator mirrors, at least one stable resonator chamber is provided by surface zones of both resonator mirrors in addition to an unstable resonator chamber formed with other surface zones of the resonator mirrors, and radiation between the resonator mirrors is coupled out through an opening in one of the resonator mirrors.
Dependencies are inferred from the claim text.