Iteratively seeded mode-locking.
Iteratively seeded mode-locking.
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DOI：
10.1364/oe.25.013481
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发表时间：
2016-12
期刊：
影响因子：
3.8
通讯作者：
Victor G. Bucklew;W. Renninger;P. Edwards;Zhiwen Liu
中科院分区：
文献类型：
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作者：
Victor G. Bucklew;W. Renninger;P. Edwards;Zhiwen Liu
超短脉冲锁模激光器使研究在新的时间尺度和革命性的技术，从生物成像到材料加工。一般来说，这些激光器的性能由特定谐振器的脉冲在去稳定化之前在能量和脉冲持续时间上可以缩放的程度来确定。到目前为止，里程碑已经来自更宽容的脉冲解决方案的应用，利用非线性概念，如孤子形成和自相似性。尽管取得了这些进展，但激光器尚未达到这些新解决方案所预期的预期性能极限。在这封信中，为了解决这一矛盾，我们证明了激光到达解决方案的路线提出了一个性能限制，而且，在解决方案本身变得不稳定之前达到。与已知的次优饱和吸收引起的自启动限制相反，我们证明了即使使用理想的饱和吸收体，这种限制也会持续存在。此外，我们证明，这个限制可以完全克服与迭代种子锁模技术。迭代播种锁模进行了数值研究，并与传统的静态播种相比，最初实现了五倍的能量增加。这种方法是广泛适用于锁模激光器，可以很容易地实现到现有的实验架构。
Ultrashort pulsed mode-locked lasers enable research at new time-scales and revolutionary technologies from bioimaging to materials processing. In general, the performance of these lasers is determined by the degree to which the pulses of a particular resonator can be scaled in energy and pulse duration before destabilizing. To date, milestones have come from the application of more tolerant pulse solutions, drawing on nonlinear concepts like soliton formation and self-similarity. Despite these advances, lasers have not reached the predicted performance limits anticipated by these new solutions. In this letter, towards resolving this discrepancy, we demonstrate that the route by which the laser arrives at the solution presents a limit to performance which, moreover, is reached before the solution itself becomes unstable. In contrast to known self-starting limitations stemming from suboptimal saturable absorption, we show that this limit persists even with an ideal saturable absorber. Furthermore, we demonstrate that this limit can be completely surmounted with an iteratively seeded technique for mode-locking. Iteratively seeded mode-locking is numerically explored and compared to traditional static seeding, initially achieving a five-fold increase in energy. This approach is broadly applicable to mode-locked lasers and can be readily implemented into existing experimental architectures.