基于光-光同步放大的时域整形技术

发布时间：2018-02-12 23:51

本文关键词： 激光器超强超快激光光参量啁啾脉冲放大时域脉冲整形　出处：《中国激光》2017年04期 　论文类型：期刊论文

【摘要】：在高能量抽运激光脉冲的传输与放大过程中,激光放大器的增益饱和效应会导致激光脉冲产生时域畸变,使输出激光脉冲无法保持其时域的平顶型分布。因此,需要对抽运激光脉冲进行时域预整形,以补偿放大器中的增益饱和。提出了一种基于光-光同步放大的时域整形技术来补偿增益饱和引入的时域畸变。该技术基于传统的放大模型,不受激光脉冲宽度的限制,操作简单,成本低廉。数值模拟结果表明,利用所提技术可以对激光系统的输入脉冲进行有效的时域整形,并且可以补偿增益饱和,从而获得时域平顶分布的输出脉冲。
[Abstract]:In the process of transmission and amplification of laser pulse pumped by high energy, the gain saturation effect of laser amplifier will lead to the distortion of laser pulse in time domain, which makes the output laser pulse unable to maintain its flat-top distribution in time domain. The time domain preshaping of pumped laser pulse is needed. In order to compensate the gain saturation in the amplifier, a time-domain shaping technique based on opto-optical synchronous amplification is proposed to compensate the time-domain distortion caused by gain saturation. The technique is based on the traditional amplification model and is not limited by the width of laser pulses. The numerical simulation results show that the proposed technique can effectively shape the input pulse of laser system in time domain and compensate the gain saturation so that the output pulse with flat top distribution in time domain can be obtained.
【作者单位】：天津大学精密仪器与光电子工程学院超快激光研究室光电信息技术教育部重点实验室;中国科学院上海光学精密机械研究所强场激光物理国家重点实验室;
【基金】：国家自然科学基金(61322502,61535009,1127423) 教育部长江学者创新团队(IRT13033)
【分类号】：TN24

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