INVESTIGATION OF TIME FASTENING ACCURACY OF STPML-LASER SUBNANOSECONDPULSES

Physical and numerical experiments to determine the accuracy of time f astening have been fulfilled on a laser with short time periodic modul ation of loss (STPML), the laser being able of synchronizing ultrashor t pulses. The physical limit of the accuracy of time fastening has bee n found to equal 0.04 T (T is the axial period of the cavity) with 1-2 mus duration of the generation process and with 2T duration of the fr ont of the resonator quality switch for a pulse train. The main contri bution to the instability of the time fastening has been found to be f rom the instability of the front duration and from errors of the front conjugation with external processes via electrical synchropulses. Whe n an air discharger is used to produce the control electrical signal, control pulses approximately 20 ns in duration lead to a time fastenin g inaccuracy of less than 1 ns.