PROCESS OF LASER TREATMENT Russian patent published in 1995 - IPC

FIELD: laser treatment. SUBSTANCE: laser radiation of variable wave length is directed into treatment zone. Radiation is focussed by optical system with positive chromatic aberration of focus position. While treating wave length is diminished with rate corresponding to velosity of translation of heating spot with geometrical or structures changes within treatment zone. As a result of dynamic change of wave length (periodic or continuous) to its decrease treatment point moves deep down treated material. EFFECT: enhanced productivity, precision and reduced energy consumption. 5 cl, 5 dwg