Control of laser high-harmonic generation with counterpropagating light.
Control of laser high-harmonic generation with counterpropagating light.
复制标题
用反向传播光控制激光高次谐波产生。
DOI：
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发表时间：
2001
影响因子：
8.6
通讯作者：
J. Peatross
中科院分区：
文献类型：
--
作者：
S. Voronov;I. Kohl;J. B. Madsen;Jerry A. Simmons;Nathan B. Terry;J. Titensor;Q. Wang;J. Peatross
相对较弱的反向传播光干扰了激光高次谐波的发射。在窄的Ar喷流中，30飞秒脉冲产生的从十分之一到低三十的谐波级数被啁啾的1皮秒反向传播的激光脉冲(强度小60倍)以高达2个数量级的对比度“关闭”。或者，在较差的相位匹配条件下，反向传播的光通过准相位匹配来通过类似的对比来促进谐波产生，其中异相发射被抑制。
Relatively weak counterpropagating light is shown to disrupt the emission of laser high-harmonic generation. Harmonic orders ranging from the teens to the low thirties produced by a 30-femtosecond pulse in a narrow argon jet are "shut down" with a contrast as high as 2 orders of magnitude by a chirped 1-picosecond counterpropagating laser pulse (60 times less intense). Alternatively, under poor phase-matching conditions, the counterpropagating light boosts harmonic production by similar contrast through quasiphase matching where out-of-phase emission is suppressed.