High harmonics diffraction caused by an ellipticity grating
High harmonics diffraction caused by an ellipticity grating
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DOI：
10.1088/1361-6455/ab7768
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发表时间：
2020-04
期刊：
影响因子：
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通讯作者：
W. Komatsubara;F. Kong;C. Zhang;P. Corkum
中科院分区：
文献类型：
--
作者：
W. Komatsubara;F. Kong;C. Zhang;P. Corkum
本文研究了两束圆偏振或椭圆偏振基光束的非共线混频产生高次谐波光束。改变两个基本光束的椭圆率改变焦平面中的电场结构，产生多个高次谐波子光束。我们表明，椭圆率的谐波偶极子调制近场谐波强度的依赖，导致在远场产生的谐波衍射。
We study the generation of high-harmonic beams by the non-collinear wave mixing of two circularly or elliptically polarized fundamental beams. Changing the ellipticity of the two fundamental beams changes the electric field structure in the focal plane, generating multiple high harmonics beamlets. We show that the ellipticity dependence of the harmonic dipole modulates the near-field harmonic intensity, resulting in the diffraction of the generated harmonics in the far-field.