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We report pulses as short as 8 ps obtained from a mode-locked cw optically-pumped semiconductor laser. The sample was a CdS platelet at a temperature of 95 K longitudinally pumped by a mode-locked Ar+ laser. The output power was 3.2 mW with 8-ps pulses, and powers greater than 10 mW have been observed with 10-ps pulses. Laser performance is quite independent of cavity length as compared to synchronously pumped dye lasers, indicating that passive pulse shaping may be taking place.
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Roxlo et al. (1981) studied this question.
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