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- Heyl, Christoph, et al.
(författare)
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Macroscopic effects in noncollinear high-order harmonic generation.
- 2014
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Ingår i: Physical Review Letters. - 1079-7114. ; 112:14
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Tidskriftsartikel (refereegranskat)abstract
- We study two-color high-order harmonic generation using an intense driving field and its weak second harmonic, crossed under a small angle in the focus. Employing sum- and difference-frequency generation processes, such a noncollinear scheme can be used to measure and control macroscopic phase matching effects by utilizing a geometrical phase mismatch component, which depends on the noncollinear angle. We further show how spatial phase effects in the generation volume are mapped out into the far field allowing a direct analogy with temporal carrier envelope effects in attosecond pulse generation.
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