Phase-matched five-wave mixing in zinc oxide microwire

Autor: Cui Kaibo, Zhang Tianzhu, Rao Tao, Zhang Xianghui, Zhang Shunping, Xu Hongxing
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Nanophotonics, Vol 13, Iss 18, Pp 3403-3409 (2024)
Druh dokumentu: article
ISSN: 2192-8614
DOI: 10.1515/nanoph-2024-0129
Popis: High-order wave mixing in solid-state platforms gather increasing importance due to the development of advanced lasers and integrated photonic circuit for both classical and quantum information. However, the high-order wave mixing is generally inefficient in solids under weak pump. Here, we observed the presence of phase matching of five-wave mixing (5WM) propagating in a zinc oxide (ZnO) microwire. The 5WM signal is enhanced by 2–3 orders of magnitude under the phase matching conditions, reaching an absolute conversion efficiency of 1.7 × 10−13 when the peak pumping power density is about 106 W/cm2. The propagation of multiple nonlinear signals, including sum frequency generation, third harmonic generation, four-wave mixing etc., benefited from both the large nonlinear coefficients and the wide transparent window of ZnO, implies the possibility of developing cascaded nonlinear process under higher pumping. This study enriches the ZnO platform for integrated nonlinear nanophotonics.
Databáze: Directory of Open Access Journals