Method for cutting an amorphous metal alloy sample

A method for machining a sample of amorphous metal alloy using a femtosecond laser, comprising at least one step of irradiating the sample with a laser beam along a reference trajectory to ablate material from the sample, in a through manner or not, along the reference trajectory so as to obtain a sample machined and maintained in an amorphous state,

• in which:
• the laser beam is pulsed, and
• the duration of each pulse is less than 1000 femtoseconds, and
• in which:
• the laser beam is movable so as to be displaced relative to the sample to be machined along the reference trajectory, or
• the sample to be machined is movable so as to be displaced relative to the laser beam along the reference trajectory, and
• the pulsation frequency of the laser beam is greater than 20 kHz;
• and
• in which:
• the amorphous metal alloy has:
• a critical diameter less than 5 millimeters, and/or
• a difference between the crystallization temperature and the glass transition temperature less than 60° C., and/or
• a quotient of the difference between the crystallization temperature and the glass transition temperature and of the difference between the liquidus temperature and the temperature glass transition less than 0.12.