We have directly generated optical pulses having a duration of 0.56 ps with a peak power of 25 W by gain switching of multi-section semiconductor lasers in which the optimized lengths of the absorption and gain regions were 50 and 200 µm, respectively. Even though the experiment was conducted via impulsive optical pumping at a low temperature, we observed that the multi-section gain switching suppresses the low-energy tail and chirping inherent to conventional gain switching in single-section lasers and is useful in direct short-pulse generation.

中文翻译：

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通过多段增益切换直接生成亚皮秒级脉冲

我们通过多段半导体激光器的增益切换直接生成了持续时间为0.56 ps，峰值功率为25 W的光脉冲，其中吸收区和增益区的最佳长度分别为50和200 µm。即使该实验是通过在低温下通过脉冲光泵浦进行的，我们也观察到多段增益切换可抑制单段激光器中常规增益切换固有的低能量拖尾和and声，可用于直接短脉冲一代。