All-solid-state intracavity-doubled Nd:YLF laser producing 300 mW of 659-nm light.

A mode-locked Nd:YLF laser is described, which uses two diode-pumped Nd:YLF rods and intracavity doubling in LiB(3)O(5) to give an all-solid-state source of high-beam-quality 659-nm red light suitable for pumping Kerr-lens-mode-locked Cr:LiSAF. Significant increases in the quantity of 659-nm light produced on active mode locking of the laser are characterized. Reductions in the noise characteristics of the 659-nm output by detuning the mode-locking frequency from cavity resonance indicate a preferential mode of operation for this device.