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Size-Dependent High-Order Harmonic Generation in Rare Gas Clusters

Title: 

Size-Dependent High-Order Harmonic Generation in Rare Gas Clusters

Authors: 
H. Park, Z. Wang, H. Xiong, S. B. Schoun, J. Xu, P. Agostini, and L. F. DiMauro
Abstract: 

High-order harmonic generation (HHG) is investigated in rare-gas clusters as a function of the cluster size using 0.8 and 1.3 μm femtosecond lasers. A characteristic, species-dependent knee structure in the single particle response is observed. A 1D recollision model qualitatively reproduces this behavior and associates it to the degree of delocalization of the initial wave function. Small clusters are observed to have a higher efficiency than monomers but rapidly lose this advantage as the size increases. The implications of these findings on the HHG mechanism in clusters are discussed.

Year: 
2014
Journal: 
Phys. Rev. Lett. 113, 263401
Keywords: 
High Harmonic Generation
Clusters