Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 106, Taiwan.
Opt Lett. 2009 Nov 15;34(22):3562-4. doi: 10.1364/OL.34.003562.
A strongly saturated waveguide-based optical-field-ionization soft-x-ray laser seeded by high harmonic generation was demonstrated for Ni-like Kr lasing at 32.8 nm. Compared with the same laser seeded only with spontaneous emission, seeding with high harmonics yields much smaller divergence, enhanced spatial coherence, and controlled polarization. The integration of high harmonic seeding, optically preformed plasma waveguide, and optical-field-ionization pumping forms one of the optimal archetypes of an ultrashort-pulse soft-x-ray laser.
一种强烈饱和的基于波导的光场电离软 X 射线激光，通过高次谐波产生来实现对类镍 Kr 激光的 32.8nm 波段的激光种子，与仅用自发发射进行种子的激光相比，高次谐波种子产生的发散更小，空间相干性增强，偏振可控。高次谐波种子、预形成等离子体波导和光场电离泵浦的集成，构成了超短脉冲软 X 射线激光的最佳原型之一。
