Distributed-feedback dye laser emitting pulses at a high repetition rate

A distributed-feedback dye laser with a pulse repetition frequency up to 100 Hz was constructed. The optical pumping and formation of distributed feedback were due to the second and third harmonics of a YAG:Nd³⁺ laser. The emission wavelength was found to be tunable in the spectral ranges 408–420 and 548–710 nm. The laser emitted radiation of (3–4)×10^–2 nm spectral width and 8×10^–3 rad angular divergence; its efficiency was up to 12 %.