Abstract

The mode of generation of picosecond optical pulses in the spectral range near 1064 nm by semiconductor lasers with distributed feedback and active region based on an InGaAs/GaAs quantum well has been studied. In the gain-modulation mode, the width of laser pulses decreases from 150 to 35 ps as the temperature increases from 5 to 50°C. It was demonstrated that there is a temperature range in which the pulse width is at a minimum, 35 ps, at a full spectrum width at half-maximum of 70 pm. The laser was mounted in a hermetically sealed butterfly case, which enabled a temperature tuning of the wavelength within 3 nm in the generation mode of pulses with width less than 45 ps. The peak output power was 0.4 W at the outlet of a single-mode fiber, with the polarization preserved.

中文翻译：

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由具有1064 nm波长的分布式反馈的激光器产生皮秒脉冲

摘要

研究了基于InGaAs / GaAs量子阱的具有分布反馈和有源区的半导体激光器在1064 nm附近光谱范围内产生皮秒光脉冲的方式。在增益调制模式下，随着温度从5升高到50℃，激光脉冲的宽度从150 ps减小到35 ps。结果表明，存在一个温度范围，其中脉冲宽度最小为35 ps，全光谱宽度为70 pm的一半。激光器安装在密封的蝴蝶盒中，该蝴蝶盒可以在宽度小于45 ps的脉冲发生模式下对3 nm内的波长进行温度调节。在单模光纤的出口处，峰值输出功率为0.4 W，并且保持偏振状态。