二次谐波产生
石英
光电子学
光子晶体
光学
非线性光学
光子学
材料科学
非线性光子晶体
Crystal(编程语言)
非线性系统
物理
激光器
计算机科学
复合材料
程序设计语言
量子力学
作者
Zhongmian Zhang,Mingchuan Shao,Fei Liang,Haohai Yu,Huaijin Zhang,Yicheng Wu
标识
DOI:10.1002/lpor.202300664
摘要
Abstract Harmonic generation can broaden the laser wavelength in a great scope and is rich in physics, but the efficient cascaded second harmonic generation especially those directly deep into deep‐ultraviolet (DUV) with one single crystal seems to be impossible, due to the extremely strict phase‐matching conditions and relative narrow bandgap of present nonlinear optical crystals. Here, this work designs a nonlinear photonic quartz crystal where the phase difference of interacted light waves is manipulated in two dimensions and realizes an unprecedented cascaded phase‐matched 2nd–5th harmonic generation simultaneously with the photon energy up to 6 eV, representing the shortest wavelength by cascaded second harmonic generation in the solid‐state nonlinear medium. The generated light is located in the visible‐DUV region with a total conversion efficiency of 2.7%. The present nonlinear photonic quartz scheme not only provides a multi‐wavelength solid‐state laser source applied in modern devices but also develops a new route for studying the light‐matter nonlinear interaction in the DUV region.
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