Laser ablation with controllable frequency pulse emission.

摘要

A photoablative laser comprising: a memory device (5) ablation profile, adapted to store sets of coordinates defining a target volume (VTAR) to remove as a series of layers (L1, L2, ... , LN) of predetermined thickness and respective areas (A1, A2, ..., AN); an apparatus emitting laser pulses (2), adapted to send laser pulses (P) with a mean release frequency (RDK) to the target volume (VTAR), in order to remove said layers; and a control device (4; 104; 204) associated with the apparatus emitting laser pulses (2), adapted to control the mean release frequency (RDK) of the laser pulses, depending on the respective areas ( A1, A2, ..., AN) of the layers (L1, L2, ..., LN) so that, when removing each layer, the target volume (VTAR) receives a number (NR) of laser pulses (P) per unit time and per unit area, below the predetermined threshold (NT); caracterizadoporque number (NR) of pulses per unit time and per unit area is equal for all layers (L1, L2, ..., LN).