Abstract Based on the dispersion relation of intense laser pulse propagating in gradually ionized plasma, this paper discusses the frequency modulation induced by ionization of an ultra-short intense laser pulse interacting with a gas target. The relationship between the frequency modulation and the ionization rate, the plasmas frequency variation, and the polarization of atoms (ions) is analysed. The numerical results indicate that, at high frequency, the polarization of atoms (ions) plays a more important role than plasma frequency variation in modulating the laser frequency, and the laser frequency variation is different at different positions of the laser pulse.
Received: 16 November 2005
Revised: 09 June 2006
Accepted manuscript online:
Fund: Project supported by the National
Science Foundation of China (Grant Nos 10574010 and 10276002) and by Specialized
Research Fund for the Doctoral Program of Higher
Education (SRFDP) of China (Grant No 20050005016).
Cite this article:
Hu Qiang-Lin(胡强林) and Liu Shi-Bing(刘世炳) Modulation of ionization on laser frequency in ultra-short pulse intense laser--gas-target 2006 Chinese Physics 15 2357
High-intensity femtosecond laser absorption by rare-gas clusters Li Shao-Hui (李邵辉), Wang Cheng (王成), Liu Jian-Sheng (刘建胜), Wang Xiang-Xin (王向欣), Zhu Pin-Pin (朱频频), Li Ru-Xin (李儒新), Ni Guo-Quan (倪国权), Xu Zhi-Zhan (徐至展). Chin. Phys. B, 2003, 12(11): 1229-1234.
No Suggested Reading articles found!
Viewed
Full text
Abstract
Cited
Altmetric
blogs
tweeters
Facebook pages
Wikipedia page
Google+ users
Online attention
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
