气候变化领域集成服务门户(CCPortal): Generation of coherent x-rays in the water window using 5-femtosecond laser pulses

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DOI	10.1126/science.278.5338.661
	Generation of coherent x-rays in the water window using 5-femtosecond laser pulses
	Spielmann Ch.; Burnett N.H.; Sartania S.; Koppitsch R.; Schnürer M.; Kan C.; Lenzner M.; Wobrauschek P.; Krausz F.
发表日期	1997
ISSN	0036-8075
起始页码	661
结束页码	664
卷号	278 期号:5338
英文摘要	Coherent extreme-ultraviolet radiation extending to wavelengths below the carbon K edge at 4.37 nanometers (nm) has been generated at a repetition rate of 1 kilohertz by focusing 5-femtosecond near-infrared (780 nm) laser pulses into a helium gas jet. The incident light field performs just a few oscillations, which results in the emission of an x-ray supercontinuum rather than discrete harmonics. Owing to the extremely short rise time of the driving pulses, neutral atoms can be exposed to high fields before they are depleted by ionization. As a result, the observed x-ray radiation extends well into the water window and is delivered in a well-collimated beam (divergence less than 1 milliradian). The high repetition rate and spatial coherence result in a brightness of about 5 x 108 photons per square millimeter per square milliradian per second in a 1-percent bandwidth at 4.37 nm, the carbon edge of the water window. The compact laboratory system holds promise as a source for biological holography and nonlinear optics in the x- ray regime.
英文关键词	carbon; helium; water; article; energy; ionization; laser; optics; priority journal; ultraviolet radiation; X ray
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/245580
作者单位	Abt. Quantenelektronik Lasertechnik, Technische Universität Wien, Gusshausstrasse 27, A-1040 Wien, Austria; Department of Electrical Engineering, University of Alberta, Edmonton, Alta. T6G 2G7, Canada; Atominst. der Osterreichischen Univ., Schüttelstrasse 115, A-1020 Wien, Austria
推荐引用方式 GB/T 7714	Spielmann Ch.,Burnett N.H.,Sartania S.,et al. Generation of coherent x-rays in the water window using 5-femtosecond laser pulses[J],1997,278(5338).
APA	Spielmann Ch..,Burnett N.H..,Sartania S..,Koppitsch R..,Schnürer M..,...&Krausz F..(1997).Generation of coherent x-rays in the water window using 5-femtosecond laser pulses.Science,278(5338).
MLA	Spielmann Ch.,et al."Generation of coherent x-rays in the water window using 5-femtosecond laser pulses".Science 278.5338(1997).