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控制场对宽带超连续谱产生的影响 被引量:3

The effect of controlling laser field on broadband suppercontinuum generation
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摘要 研究了控制场对宽带超连续谱产生的影响,计算表明控制脉冲的波长在1.6±0.2μm范围内调节时,谐波谱的超连续部分形状几乎没有变化,截止区位置和超连续谱宽度变化都小于5%.随着控制场相对于基频场强度的增加,谐波谱上超连续部分的宽度会增加.采用强度为6×1014W/cm2,波长为800 nm,脉冲宽度为12 fs的多光周期基频脉冲叠加脉冲宽度为30 fs,波长为1.6μm,相对相位为-0.1π,相对强度为20%的控制场作为驱动脉冲,选出了短量子轨道并产生105 eV的超连续谱,获得了70 as的单个脉冲输出. The effect of controlling laser field on broadband suppercontinuum generation is researched. By adjusting the wavelength of controlling field as much as ±0.2μm at 1.6 μm, no effect has been found in suppercontinuum obviously, the cut off range and the bandwidth of suppercontinuum both vary less than 5 %. With increasing of the intensity of the controlling field, the suppercontinuum is broadened. A 12 fs/800 nm and a 30 fs/1.6 μm pulses are combined to serve as the driving pulse with the relative phase of - 0.1π and relative intensity of 20%, the short quantum path is selected and a 105 eV suppercontinuum is obtained.
机构地区 华中科技大学
出处 《物理学报》 SCIE EI CAS CSCD 北大核心 2009年第7期4908-4913,共6页 Acta Physica Sinica
基金 国家重点基础研究发展计划(973)项目(批准号:2006CB806006) 国家自然科学基金(批准号:10574050,10774054,10734080)资助的课题~~
关键词 宽带 超连续谱 阿秒脉冲 短量子轨道 broadband, supercontinuum, attosecond pulse, short quantum path
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同被引文献64

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