A scanning method with a laser system, the method including the steps of: generating femtosecond seed pulses (211) by means of an oscillator (100, 100 ')； extend a duration of the seed pulses by means of an extender (200, 200 ')； amplifying extended seed pulses (212) by an amplifier (300, 300 ') in laser pulses (213) with a regenerative amplifier (300) comprising extreme mirrors (321, 322, 323, 324)； compensating a group delay dispersion of the laser pulses in the range of 5,000-20,000 fs2 with a dispersion compensator between said amplifier end mirrors； emit the amplified laser pulses (213) from the amplifier by means of an electro-optical modulator (330)； compressing the extended laser pulses amplified in laser pulses of femtoseconds (214) with a compressor； concentrate the laser pulses at a focal point in a target area with a scanning laser delivery system； scan the focal point with a scanning speed in the target area with the scanning laser delivery system； change the scanning speed using a processor of the scanning laser delivery system； and adjust the repeat frequency according to the scan speed modified with a repeat frequency controller； wherein the laser system is configured to emit a laser beam with a repetition frequency in a range of 10 kHz to 20 MHz, and to emit the laser beam with an output power greater than 0.1 W.Un método de escaneo con un sistema lasérico, incluyendo el método las etapas de: generar pulsos semilla de femtosegundos (211) mediante un oscilador (100, 100')； extender una duración de los pulsos semilla mediante un extensor (200, 200')； amplificar pulsos semilla extendidos (212) mediante un amplificador (300, 300') en pulsos laséricos (213) con un amplificador regenerativo (300) que comprende espejos extremos (321, 322, 323, 324)； compensar una dispersión de retardo de grupo de los pulsos laséricos en el margen de 5.000 - 20.000 fs2 con un compensador de dispersión entre dichos espejos extremos del amplificador； emitir los pulsos laséric
