Characterization of collisionally pumped optical-field-ionization soft X-ray lasers

被引：10
|
作者：
Mocek, T [1 ]
Sebban, S
Bettaibi, I
Upcraft, LM
Balcou, P
Breger, P
Zeitoun, P
Le Pape, S
Ros, D
Klisnick, A
Carillon, A
Jamelot, G
Rus, B
Wyart, JF
机构：
[1] ENSTA Ecol Polytech, Lab Opt Appl, F-91761 Palaiseau, France
[2] CEA, Serv Photons Atomes & Mol, F-91191 Gif Sur Yvette, France
[3] Univ Paris 11, LIXAM, F-91405 Orsay, France
[4] Inst Phys, Dept Xray Lasers, Prague 18221 8, Czech Republic
[5] Univ Paris 11, Aime Cotton Lab, F-91405 Orsay, France
来源：
APPLIED PHYSICS B-LASERS AND OPTICS | 2004年 / 78卷 / 7-8期
关键词：
D O I：
10.1007/s00340-004-1436-3
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We give an overview of recent experimental results on optical-field-ionization collisional soft X-ray lasers developed at LOA. By focusing a 30-fs, circularly polarized Ti-sapphire laser pulse at an intensity of up to 8x10(17) Wcm(-2) into a low-density gas cell containing Xe or Kr, we produced a few mm long plasma column for soft X-ray amplifier. Saturated amplification has been achieved on the 4d(9)5d(S-1(0))-4d(9)5p(P-1(1)) transition at 41.8 nm in Xe8+, and on the 3d(9)4d(S-1(0))-3d(9)4p(P-1(1)) transition in Kr8+ at 32.8 nm. Under optimum pumping conditions the Xe8+ laser provides about (5+/-2)x10(9) photons per pulse whilst the Kr8+ laser delivers up to (2.5+/-1)x10(9) photons per shot. The repetition rate of these soft X-ray lasers is 10 Hz. The beam wavefront of the Xe8+ laser has been measured by a Shack-Hartmann soft X-ray wavefront sensor, and the pulse duration by a cross-correlation technique.
引用
收藏
页码：939 / 944
页数：6
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