Noncollinear phase-matching of high harmonic generation in solids

被引：0
|
作者：
Peterka, Pavel [1 ]
Trojanek, Frantisek [1 ]
Maly, Petr [1 ]
Kozak, Martin [1 ]
机构：
[1] Charles Univ Prague, Fac Math & Phys, Dept Chem Phys & Opt, Ke Karlovu 3, Prague 2, Czech Republic
来源：
APL PHOTONICS | 2024年 / 9卷 / 11期
基金：
欧洲研究理事会;
关键词：
BAND-STRUCTURE;
D O I：
10.1063/5.0219911
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We propose and experimentally demonstrate a scheme allowing reaching noncollinear phase-matching of high harmonic generation in solids, which may potentially lead to an enhancement of the generation efficiency. The principle is based on high-order frequency mixing of two light waves with identical frequencies but different directions of wavevectors. In this process, Nth harmonic frequency is produced by frequency mixing of N + 1 photons from a wave with high amplitude of electric field and a single photon from a wave with low field amplitude, which are propagating noncollinearly in optically isotropic media. We experimentally verify the feasibility of this scheme by demonstrating phase-matched generation of third and fifth harmonic frequency in sapphire.
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页数：9
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