Demonstration of a hybrid collisional soft-x-ray laser

作     者：K. A. Janulewicz J. J. Rocca F. Bortolotto M. P. Kalachnikov V. N. Shlyaptsev W. Sandner P. V. Nickles 

作者机构：Max Born Institute Max-Born-Strasse 2A D-12489 Berlin Germany Department of Electrical and Computer Engineering Colorado State University Fort Collins Colorado 80523 Department of Applied Science UC Davis-Livermore California 94550 

出 版 物：《Physical Review A》 (Phys Rev A)

年 卷 期：2001年第63卷第3期

页      面：033803-033803页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

主　　题：.divergence capillary rapidly picosecond generate laser pulse irradiated heated Ne-like short laser gain-length cm-long plasma column length soft ray lasers 

摘      要：We report on a demonstration of x-ray-ultraviolet amplification following collisional excitation in a discharge-created plasma waveguide irradiated by a picosecond optical laser pulse. A capillary discharge was used to generate a sulfur plasma column with a large concentration of Ne-like ions and a radially concave electron density profile. The intense short laser pulse rapidly heated the electrons, producing amplification in the 3p1S0–3s1P1 transition of Ne-like S at 60.8 nm. The integrated gain-length product obtained exciting a 3-cm-long capillary with a 0.46-J short laser pulse is 6.8. The beam divergence was observed to decrease as a function of plasma column length, reaching 2.5 mrad for 30-mm-long capillaries. This hybrid laser pumping scheme could lead to a new generation of efficient tabletop soft-x-ray lasers.