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利用频率相近的双色激光驱动氢原子产生单个短脉冲

, PP. 405-410

Keywords: 激光物理,单个短脉冲,双色激光场,三维氢原子的高次谐波,量子通道

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Abstract:

通过研究双色场中三维氢原子的高次谐波,发现当作为驱动源的两束光频率比为35,且附加光相对于基本光的强度比落在某个特殊值时(0.35),叠加截止区的高次谐波能直接得到单个的短脉冲。提出利用双色场获取单个短脉冲的新方案,该方案的要点是作为驱动源的两束光,频率需要是比较接近的奇数比;附加光的相对强度需要是一个特殊值,使不同通道间的干涉相消抑制其它脉冲。在进一步的研究中可选取束缚能更高的原子,扩展截止区的位置,使得到单脉冲的脉宽更窄。

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