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A scheme, similar to one used in the chirp radar, is proposed to compress in time, without loss of energy, the light pulse generated by a mode-locked laser. On the basis of preliminary experimental results obtained with a mode-locked He-Ne laser and a LiNbO 3 phase modulator, it is predicted that compression of 50-ps pulses derived from a Nd:YAG laser to 0.4 ps or less is feasible.
Giordmaine et al. (Wed,) studied this question.