Synchronously pumped intracavity YLF–Nd–KGW picosecond Raman lasers and LiF:F–2amplifiers

Passively mode-locked lamp-pumped Nd 3+ : KGd(WO 4 ) 2 and Nd 3+ :YLiF 4 –KGd(WO 4 ) 2 lasers were investigated. Stimulated Raman radiation in KGW crystal with tunable 1138.4, 1156, 1180 nm wavelengths was obtained under intra-cavity synchronous laser pumping. Laser Stokes pulses were amplified with 27 – 33% energy efficiency in a simple scheme under synchronous picosecond laser pumping of LiF:F 2 - crystals and ∼ 2 ps pulses with 0.2 – 0.37 GW peak power were attained.