Demonstration Lasing in "Water Window" at 3.4 nm in Transition to Ground State of CVI Ions

摘要-0754651 S。Suckewer，普林斯顿大学目标：本提案的目标是开发一种紧凑的（“桌面”）软X射线激光器（SXL），在所谓的复合方案中，在3.4 nm处过渡到类氢CVI离子的基态。这种紧凑的3.4 nm激光器将为软X射线显微镜在2.3 - 4.4 nm光谱区域（所谓的“水窗”）的生物细胞研究中的应用提供非常有用的源。智力优势：使用到基态的跃迁作为激光跃迁的主要吸引力之一是其有利的缩放到较短的波长。它是可能实现激光内？水窗？通过使用具有相当高重复率的相对中等功率的激光器作为泵浦。最近，我们非常广泛的计算表明，在CVI离子中使用峰值强度为Ip ~ 1019 W/cm ~ 2量级的超短激光脉冲实现瞬态复合方案的高增益是可行的。更广泛的影响：在5 - 10 Hz重复率下工作的紧凑的3.4 nm X射线激光器将在生物、物理和化学研究中具有许多重要的应用。它也将打开一个？路径？教育效益：拟议的研究提供了一个很好的机会，教学和培训研究生，也为非常先进的本科生，在基础激光和等离子体理论和实验领域。激子的产生是由于工作在异常高的激光强度和超短脉冲下的潜力。

ABSTRACTECCS-0754651S. Suckewer, Princeton UniversityObjective: The objective of this proposal is to develop a compact ("table top") soft x-ray laser (SXL) at 3.4 nm in transition to ground state of hydrogen-like CVI ions in so called recombination scheme. Such a compact 3.4 nm laser would provide a very useful source for soft X-ray microscopy in application to biological cell studies in 2.3 - 4.4 nm spectral region, the so called "water window". Intellectual Merit: One of the main attractions of using the transition to ground state as the lasing transition is its favorable scaling to shorter wavelengths. It is possible to achieve lasing within the ?water window? by using lasers with relatively moderate power at quite high repetition rate as pumps. Recently, our very extensive calculations have shown the feasibility of achieving high gain with the transient recombination scheme in the CVI ions using ultrashort laser pulses with peak intensity in the order of Ip ~ 1019 Watt/cm2 .Broader Impact: A compact 3.4 nm X-ray laser operating at 5 -10 Hz repetition rate will have a number of important applications in biological, physical and chemical studies. It will also open a ?path? to developing future compact X-ray lasers with much shorter wavelengths.Educational Benefits: The proposed research provides an excellent opportunity for teaching and training graduate students, and also for very advanced undergraduate students, in the areas of basic laser and plasma theory and experiments. The excitements arise from the potential of working with unusually high laser intensities and ultrashort pulses.