LASER A MIROIR A CONJUGAISON DE PHASE PAR MELANGE A QUATRE ONDES ET PROCEDE DE RENOVATION D'UN LASER CLASSIQUE PAR TRANSFORMATION EN UN LASER A MIROIR A CONJUGAISON DE PHASE

摘要

The invention concerns a phase-conjugation laser mirror by four-wave mixing in its amplifying medium (2), wherein said mirror (9) is generated by exclusively passive means (5-8). A single amplifying medium (2) is provided in a Fabry-Perot cavity and the passive means (5-8) are arranged to generate pump beams forming a distribution wave in said cavity. The laser is well adapted to machining materials.