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A novel but simple and practical mode locker was built and demonstrated for a diode-pumped Nd:BEL laser. Fast electrical pulses from a comb generator drive a LiNbO(3) crystal, which produces pulsed electro-optic phase modulation in the laser cavity. Stable mode-locked pulses of 7.5-ps duration were obtained at a repetition rate of 250 MHz.
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Godil et al. (1991) studied this question.
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