Efficient and highly tunable second-harmonic generation in Z-cut periodically poled lithium niobate nanowaveguides

Jia Yang Chen, Chao Tang, Zhao Hui Ma, Zhan Li, Yong Meng Sua, Yu Ping Huang

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

Thin-film lithium-niobate-on-insulator (LNOI) has emerged as a superior integrated-photonics platform for linear, nonlinear, and electro-optics. Here we combine quasi-phase-matching, dispersion engineering, and tight mode confinement to realize nonlinear parametric processes with both high efficiency and wide wavelength tunability. On a millimeter-long, Z-cut LNOI waveguide, we demonstrate efficient (1900±500%W-1 cm-2) and highly tunable (-1.71 nm=K) second-harmonic generation from 1530 to 1583 nm by type-0 quasi-phase-matching. Our technique is applicable to optical harmonic generation, quantum light sources, frequency conversion, and many other photonic information processes across visible to mid-IR spectral bands.

Original languageEnglish
Pages (from-to)3789-3792
Number of pages4
JournalOptics Letters
Volume45
Issue number13
DOIs
StatePublished - 1 Jul 2020

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