Minimizing the angular divergence of high-order harmonics by truncating the truncated Bessel beam
文献类型：期刊论文
| 作者 | Ye, P ; Teng, H ; He, XK ; Zhong, SY ; Wang, LF ; Zhan, MJ ; Zhang, W ; Yun, CX ; Wei, ZY |
| 刊名 | PHYSICAL REVIEW A
 |
| 出版日期 | 2014 |
| 卷号 | 90期号:6 |
| ISSN号 | 1050-2947 |
| 通讯作者 | Ye, P (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We have experimentally investigated high-order-harmonic generation driven by a few-cycle truncated Bessel (TB) laser beam which propagates through optical elements of finite aperture sizes. The TB beam was first investigated by Nisoli et al. [Phys. Rev. Lett. 88, 033902 (2002)], who assumed an infinite size for the optical elements so they concluded that the phase and intensity of the laser field oscillate dramatically around the laser focus in space. However, in all real experiments, the optical elements are always finite in size and would further truncate the TB beam, and so the oscillations would dwindle substantially. In this paper we take the finite size of the optical elements into account. We find that the further truncated TB beam has two intensity peaks around the focus. In front of the second peak position the curvatures of the laser phase front and the atomic-dipole phase front have the same absolute values but opposite signs, so the generated harmonic has a flat wavefront and hence a minimized angular divergence. In addition, at this position the pump intensity is not much less than its maximal value. This result is of significant importance in practical applications due to the finite aperture size of all real optical elements. |
| 资助信息 | National Basic Research Program of China [2013CB922401, 2013CB922402]; National Major Instrument Program of China [2012YQ120047]; National Natural Science Foundation of China [11174361, 61205130]; International Joint Research Program of National Natural Science Foundation of China [61210017] |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59453]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Ye, P,Teng, H,He, XK,et al. Minimizing the angular divergence of high-order harmonics by truncating the truncated Bessel beam[J]. PHYSICAL REVIEW A,2014,90(6). |
| APA | Ye, P.,Teng, H.,He, XK.,Zhong, SY.,Wang, LF.,...&Wei, ZY.(2014).Minimizing the angular divergence of high-order harmonics by truncating the truncated Bessel beam.PHYSICAL REVIEW A,90(6). |
| MLA | Ye, P,et al."Minimizing the angular divergence of high-order harmonics by truncating the truncated Bessel beam".PHYSICAL REVIEW A 90.6(2014). |
入库方式： OAI收割
来源：物理研究所
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