Characteristics of LD pumped high repetition frequency high average power Nd:YAG green laser.

摘要

Laser diode pumped all solid state high repetition rate, high average power Nd:YAG laser MOPA system is developed as a pumping source of tunable laser for atomic vapor laser isotope separation. The Nd:YAG laser consisting of an oscillator and three amplifiers is operated at the pulse repetition frequency of 1 kHz. The average output power of about 95 W at 1064 nm and 50 W at second harmonic by a KTP crystal is obtained. The pulse duration of the fundamental is 50 ns, and that of second harmonic is around 40 ns with the cavity length of 100 cm, which is suitable to pump tunable laser. The electrical efficiency is 1.6% which is greater than that of copper vapor laser. (author)