A temporally modulated in rate and/or amplitude pulse laser system, comprising: - a first source comprising a mode-locking laser adapted to generate a source signal composed of source light pulses; - an optical amplifier system adapted to receive and amplify said source signal , wherein the temporally modulated pulse laser system includes: - a pulse selection or modulation device comprising a pulse selector or modulator arranged between the first source and the optical amplifier system , the pulse selector or modulator being configured to select or modulate the source signal so as to form a main signal composed of one or more source light pulses, the main signal being temporally modulated in rate and/or amplitude; and - a second source emitting a secondary signal , - the laser system being configured to inject simultaneously, on the one hand, the main signal and, on the other hand, the secondary signal into said optical amplifier system , the optical amplifier system forming, on the one hand, an amplified main signal that is temporally modulated in rate and/or amplitude and, on the other hand, an amplified secondary signal , - the secondary signal being modulated in real time as a function of the temporal modulation in rate and/or amplitude of the main signal , so as to stabilize the energy stored in the optical amplifier system as a function of time, and - the laser system being configured to spatially separate, to a first output (S1), the temporally modulated in rate and/or amplitude amplified main signal , and, to a second output (S2,) the amplified secondary signal , characterized in that : - the second source comprises a laser diode emitting a secondary signal comprising secondary light pulses having a duration comprised between 1 and 20 nanoseconds. - a first source comprising a mode-locking laser adapted to generate a source signal composed of source light pulses; - an optical amplifier system adapted to receive and amplify said source signal , - a pulse selection or modulation device comprising a pulse selector or modulator arranged between the first source and the optical amplifier system , the pulse selector or modulator being configured to select or modulate the source signal so as to form a main signal composed of one or more source light pulses, the main signal being temporally modulated in rate and/or amplitude; and - a second source emitting a secondary signal , - the laser system being configured to inject simultaneously, on the one hand, the main signal and, on the other hand, the secondary signal into said optical amplifier system , the optical amplifier system forming, on the one hand, an amplified main signal that is temporally modulated in rate and/or amplitude and, on the other hand, an amplified secondary signal , - the secondary signal being modulated in real time as a function of the temporal modulation in rate and/or amplitude of the main signal , so as to stabilize the energy stored in the optical amplifier system as a function of time, and - the laser system being configured to spatially separate, to a first output (S1), the temporally modulated in rate and/or amplitude amplified main signal , and, to a second output (S2,) the amplified secondary signal , - the second source comprises a laser diode emitting a secondary signal comprising secondary light pulses having a duration comprised between 1 and 20 nanoseconds. <EOS>