Method for operating a pulsed diode-pumped solid-state Tm:YAG laser comprising: providing a pump light source for pumping a Tm:YAG laser, said pump light source comprising at least one laser diode unit configured for emitting a series of light pulses (105, 106, 107) for pumping the Tm:YAG laser, wherein the at least one laser diode unit is emitting light pulses with a wavelength between 778 to 782 nm and with pulse durations of up to 500 μs and with amplitudes of up to a maximum current of 250 A, and wherein said at least one laser diode unit is emitting light emission pulses (106,107) with a pulse repetition frequency close to or equal to a requested frequency setting of the Tm:YAG laser and is emitting other light emission pulses with frequencies not equal to the requested frequency setting of the Tm:YAG laser, i.e. is emitting other light emission pulses with frequencies outside a predetermined interval around the requested frequency setting of the Tm:YAG laser, modulating the series of light emission pulses (105, 106, 107) of the at least one laser diode unit such that only the light pulses (106, 107) with a frequency close to or equal to the requested frequency setting of the Tm:YAG laser are operated with a required pulse amplitude and/or a required pulse duration sufficient to trigger light emission of the Tm:YAG laser, wherein the requested diode-pumped Tm:YAG laser frequency setting lies at a frequency below 300 Hz, and such that said other light pulses emitted by the at least one laser diode unit are operated with a pulse amplitude and/or pulse duration not sufficient to trigger light emission of the Tm:YAG laser. providing a pump light source for pumping a Tm:YAG laser, said pump light source comprising at least one laser diode unit configured for emitting a series of light pulses (105, 106, 107) for pumping the Tm:YAG laser, wherein the at least one laser diode unit is emitting light pulses with a wavelength between 778 to 782 nm and with pulse durations of up to 500 μs and with amplitudes of up to a maximum current of 250 A, and wherein said at least one laser diode unit is emitting light emission pulses (106,107) with a pulse repetition frequency close to or equal to a requested frequency setting of the Tm:YAG laser and is emitting other light emission pulses with frequencies not equal to the requested frequency setting of the Tm:YAG laser, i.e. is emitting other light emission pulses with frequencies outside a predetermined interval around the requested frequency setting of the Tm:YAG laser, modulating the series of light emission pulses (105, 106, 107) of the at least one laser diode unit such that only the light pulses (106, 107) with a frequency close to or equal to the requested frequency setting of the Tm:YAG laser are operated with a required pulse amplitude and/or a required pulse duration sufficient to trigger light emission of the Tm:YAG laser, wherein the requested diode-pumped Tm:YAG laser frequency setting lies at a frequency below 300 Hz, and such that said other light pulses emitted by the at least one laser diode unit are operated with a pulse amplitude and/or pulse duration not sufficient to trigger light emission of the Tm:YAG laser.