Highly efficient 1181 nm output from a transversely diode-pumped Nd3+:KGd(WO4)2 self-stimulating Raman laser

We have achieved high average power Raman output from a compact, diode-pumped, self-stimulating Nd3+:KGd(WO4)2 Raman laser. Maximum Raman output power of 0.8 W was achieved at a pulse repetition frequency (PRF) of 2 kHz. The optical efficiency from diode to Raman laser was 14%. By generating extra-cavity second harmonics using a LiB3O5 crystal, it was possible to produce 0.2 W yellow output. The laser system was simulated numerically using rate equations and the results obtained were in good agreement with the experimental results.