Nisoli M, Priori E, Sansone G, Stagira S, Cerullo G, De Silvestri S, Altucci C, Bruzzese R, de Lisio C, Villoresi P, Poletto L, Pascolini M, Tondello G
Istituto Nazionale per la Fisica della Materia, Centro di Elettronica Quantistica e Strumentazione Elettronica-C.N.R., Dipartimento di Fisica, Politecnico, Milano, Italy.
Phys Rev Lett. 2002 Jan 21;88(3):033902. doi: 10.1103/PhysRevLett.88.033902. Epub 2002 Jan 2.
Low-divergence, high-brightness harmonic emission has been generated by using a fundamental beam with a truncated Bessel intensity profile. Such a beam is directly obtained by using the hollow-fiber compression technique, which indeed allows one to optimize both temporal and spatial characteristics of the high-order harmonic generation process. This is particularly important for the applications of radiation, where extreme temporal resolution and high brightness are required.
通过使用具有截断贝塞尔强度分布的基波产生了低发散、高亮度的谐波发射。这样的光束可通过中空光纤压缩技术直接获得，该技术确实能够优化高次谐波产生过程的时间和空间特性。这对于需要极高时间分辨率和高亮度的辐射应用尤为重要。
