Nonlinear frequency conversion in one dimensional lithium niobate photonic crystal nanocavities

• Published in: Applied physics letters Vol. 113; no. 2
• Main Authors: Jiang, Haowei, Liang, Hanxiao, Luo, Rui, Chen, Xianfeng, Chen, Yuping, Lin, Qiang
• Format: Journal Article
• Language: English
• Published: Melville American Institute of Physics 09.07.2018
• Subjects: Applied physics; Lithium niobates; Photonic crystals; Quantum theory; Second harmonic generation; Upconversion

We demonstrate flexible nonlinear frequency up-conversion in high-Q lithium niobate photonic crystal nanobeam resonators. The high optical Q together with strong optical mode confinement allows us to observe clear second harmonic generation and sum frequency generation with an optical power around o...