INTRA-CAVITY TRIPLED SOLID STATE DIODE PUMPED LASER

摘要

A diode pumped laser (20) wherein third harmonic generation at 355 nm is obtained from an intra-cavity tripled diode pumped Nd:YVO4 crystal (S) utilizing an angle-tuned LBO doubler (D) and tripler (T), and operated at high repetition rates and good overall efficiency. An average UV power of over 2 watts at 30 kHz and 1 watt at 100 kHz is typically obtained with a 20 watt diode array "bar" (DP) side-pumping a one percent (1 %) Nd:YVO4 (vanadate) slab (S). The device utilizes room temperature intra-cavity doubling and takes advantage of a small beam waist at the doubler and tripler required with low-power CW diode pumping.