Abstract
Recently, the synthesis of infrared dyes of high photochemical stability became possible.1 One of these dyes was used to operate a synchronously pumped cw dye laser system tunable around 1.3 μm.2 Here, we demonstrate a new method for effective pumping of dyes with small fluorescence quantum yield (10–4). Laser emission up to 1.8 μm is now accessible by a travelling wave pumping system.
© 1984 Optical Society of America
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