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 only tens of microWatts. These demonstrations show that high-Q lithium niobate photonic crystal nanoresonators are of great promise for nonlinear photonic applications.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 only tens of microWatts. These demonstrations show that high-Q lithium niobate photonic crystal nanoresonators are of great promise for nonlinear photonic applications.

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一维铌酸锂光子晶体纳米腔中的非线性频率转换

我们在高 Q 铌酸锂光子晶体纳米束谐振器中展示了灵活的非线性上变频。高光 Q 值和强光模限制使我们能够观察到清晰的二次谐波生成和和频生成，光功率仅为几十微瓦。这些演示表明，高 Q 铌酸锂光子晶体纳米谐振器在非线性光子应用中具有广阔的前景。我们展示了高 Q 铌酸锂光子晶体纳米束谐振器中灵活的非线性上变频。高光 Q 值和强光模限制使我们能够观察到清晰的二次谐波生成和和频生成，光功率仅为几十微瓦。