STABLE FEMTOSECOND PULSE LASER.

摘要

P A FEMTOSECOND LASER WITH DYEING INCLUDES A DYE AMPLIFIER ASSEMBLY WITH DYE30 PUMPED BY A YAG LASER IN NEODYME35, IN TORQUE MODE, WITH DOUBLE FREQUENCY. THE CAVITY OF THE LASER WITH MAIN DYE IS DEFINED ON A SIDE OF THE ASSEMBLY30 BY A LINEAR STRUCTURE WITH PRISMS11 AND 14 LEADING TO AN OUTPUT MIRROR15, ON THE OTHER BY A MOUNT20 FORMING ANTI-RESONANT MIRROR, AROUND A DEVICE SATURABLE ABSORPTION 40. LEAKS FROM A MIRROR22 ARE USED TO TAKE AN ERROR SIGNAL WHICH, BY SPECTRAL ANALYSIS AND COMPARISON TO A REFERENCE WAVELENGTH IN 50 ALLOWS THE ACTIVATION OF A HIGH VOLTAGE AMPLIFIER60, WHICH ACTS ON A PIEZOELECTRIC STACK19 SET THE POSITION OF THE OUTPUT MIRROR15 TO ADJUST THE OPTICAL LENGTH OF THE CAVITY ACCORDING TO THE SPECTRAL CHARACTERISTICS OF THE PULSES PRODUCED. /P