论文标题
二极管无环状液体染料激光器的时间动力学
Temporal dynamics of diode-pumped circulation-free liquid dye lasers
论文作者
论文摘要
据报道，垂直外部空腔中的高度稳定的二极管无环状液体染料激光。设计很简单（无需制造过程步骤，不需要流体电路），紧凑（〜cm尺寸）和具有成本效益。据报道，在140万脉冲以50 Hz处的140万脉冲之后，观察到具有出色的光稳定性 - 效率下降的效率为1 $ {}^2 $ 1，其光学效率为1 $ {}^2 $ 1，这一值可与流动系统相当，并且比有机固态激光器可实现的值高得多。我们表明，热效应在稳定性以及该激光器的动力学方面都是中心的。针对不同的泵脉冲持续时间/重复率，研究了激光堆积和关闭动力学；他们揭示了脉搏缩短，泵脉冲持续时间和重复速率增加，这被证明是由于热透镜衍射损耗引起的。这种激光结构提供了一个非常方便且简单的平台，用于测试或收集解决方案可供处理的增益材料。
A highly stable diode-pumped circulation-free liquid dye laser in a vertical external cavity is reported. The design is simple (no fabrication process step required, no fluid circuitry), compact (~ cm sized), and cost-effective. An optical efficiency of 18% with a M${}^2$ of 1 are reported, with an excellent photostability-no efficiency drop was seen after 1.4 million pulses at 50 Hz, a value comparable to flowing systems and much higher than values achievable with organic solid-state lasers. We show that thermal effects are central in the stability and also on the dynamics of this laser. The laser build-up and shutdown dynamics are studied in detail for different pump pulse durations/repetition rates; they reveal a pulse shortening with increasing pump pulse duration and repetition rate that are shown to be due to thermal lensing diffraction losses. This laser structure offers a very convenient and simple platform for testing or harvesting solution-processable gain materials.
