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Generation of nanosecond infrared pulses tunable from 2.8 to 16 μm by efficient stimulated electronic Raman scattering

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Abstract

A source of nanosecond IR pulses tunable from 2.8 to 16 μm (3500 to 630 cm−1) is obtained by stimulated electronic Raman scattering (SERS) on the cesium 6s−5d transition. Reliable rhodamine and DCM dye-laser pulses are frequency shifted with up to 10% quantum conversion efficiency to obtain up to 2 mJ of IR pulse energy, a 5–25× improvement in energy over previous SERS infrared generation. The tuning curve structure and unwanted amplified spontaneous emission lines are also substantially reduced.

© 1987 Optical Society of America

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