Efficient spectral narrowing, and tunability over a wide spectral range, has been demonstrated in solid and liquid organic dye lasers using diffraction gratings as cavity reflectors.

Solutions of several dyes of the fluorescein family have been made to exhibit stimulated emission in the visible when excited by ruby and neodymium second harmonics. Oscillation threshold and conversion efficiencies are given. Depolarization effects in the emission are described.

A selfconsistent approach to spectral hole burning in quantum wire lasers Synchronously pumped modelocked dye laser pumped by a frequencydoubled modelocked and Q switched diode laser pumped Nd:YAG laser

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