High harmonic frequency combs for high resolution spectroscopy.
High harmonic frequency combs for high resolution spectroscopy.
复制标题
DOI：
10.1103/physrevlett.100.253901
复制
发表时间：
2008-06
影响因子：
8.6
通讯作者：
A. Ozawa;J. Rauschenberger;J. Rauschenberger;C. Gohle;Maximilian Georg Herrmann;D. Walker;V. Pervak;A. Fernández;R. Graf;A. Apolonski;R. Holzwarth;F. Krausz;F. Krausz;T. Hänsch;T. Hänsch;T. Udem
中科院分区：
文献类型：
--
作者：
A. Ozawa;J. Rauschenberger;J. Rauschenberger;C. Gohle;Maximilian Georg Herrmann;D. Walker;V. Pervak;A. Fernández;R. Graf;A. Apolonski;R. Holzwarth;F. Krausz;F. Krausz;T. Hänsch;T. Hänsch;T. Udem
利用重复频率为10.8MHz的钛宝石锁模激光器脉冲作为种子，在腔内氙气射流中产生了一系列谐波。谐波高达19阶，在43 nm处观察到平台谐波在微瓦功率级。一个精心设计的色散补偿方案和使用一个温和的重复率允许在输出功率的平台谐波的4个数量级比以前的结果显着改善。有了这样的功率水平和重复率，极紫外区域的高分辨率光谱变得可能。一个有趣的目标是类氢He+在60 nm处的1 S-2S跃迁。
We generated a series of harmonics in a xenon gas jet inside a cavity seeded by pulses from a Ti:sapphire mode-locked laser with a repetition rate of 10.8 MHz. Harmonics up to 19th order at 43 nm were observed with plateau harmonics at the microW power level. An elaborate dispersion compensation scheme and the use of a moderate repetition rate allowed for this significant improvement in output power of the plateau harmonics of 4 orders of magnitude over previous results. With this power level and repetition rate, high-resolution spectroscopy in the extreme ultraviolet region becomes conceivable. An interesting target would be the 1S-2S transition in hydrogenlike He+ at 60 nm.