High-order harmonic generation up to 250 eV from highly ionized argon

被引：118
|
作者：
Gibson, EA [1 ]
Paul, A
Wagner, N
Tobey, R
Backus, S
Christov, IP
Murnane, MM
Kapteyn, HC
机构：
[1] Univ Colorado, Joint Inst Lab Astrophys, Boulder, CO 80309 USA
[2] Natl Inst Stand & Technol, Boulder, CO 80309 USA
来源：
PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 03期
关键词：
D O I：
10.1103/PhysRevLett.92.033001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We demonstrate the generation of very high-order harmonics, up to 250 eV, using argon gas. This extends by 100 eV the highest harmonics previously observed using Ar and exceeds the energies observed using any other medium besides helium. This advance is made possible by using a waveguide geometry to limit plasma-induced laser beam defocusing, making it possible to generate high harmonics from Ar ions. This work shows that high harmonic emission from ions can extend laser-based coherent up-conversion into the soft x-ray region of the spectrum.
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页数：4
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