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Tunable subpicosecond pulses (pulse width =0.8 psec) have been obtained from a cw mode-locked Rhodamine B dye laser. Mode locking is achieved by synchronous pumping of the Rh-B dye with a cw train of pulses which are obtained from a synchronously mode-locked Rhodamine 6G dye laser.
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Heritage et al. (1978) studied this question.
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