A LASER SYSTEM PROVIDING A SHAPED INTENSITY PROFILE OF AN OUTPUT BEAM WITHIN AN UNSTABLE OPTICAL RESONATOR LAYOUT AND METHOD THEREOF

摘要

The present invention relates to a laser system and a method of generating a defined spatial mode-shaped laser beam using an unstable laser resonator layout. The laser system for mode shaping of a laser beam (7) within an unstable optical resonator layout comprising an active medium (3), characterized in that, the active media (3) comprises a pumped area (4), wherein the gain distribution is generated by an optical pump beam's spatially intensity profile. In a preferred embodiment, the system may further comprise an end-pumped layout to deliver the spatially shaped optical pump beam (6) to the active medium (3); and/or an active element and/or a passive element for modifying the resonator losses; and/or means of output coupling of a laser beam from said unstable resonator layout. The system according to the present invention is suitable to deliver a top-hat beam profile.