论文标题
退化$χ^{（2）} $微孔子中有效的频率转换
Efficient frequency conversion in a degenerate $χ^{(2)}$ microresonator
论文作者
论文摘要
光子芯片上的微孔子可以增强非线性光学效果，因此有望实现可扩展的高效率频率转换设备。但是，在多个波长之间实现相匹配条件仍然是一个重大挑战。在这里，我们提出了一个可行的方案，用于退化总和频率转换，该方案仅需要两模式相位匹配条件。当驱动器和信号均与同一电信模式的共振接近时，实现了高效的片上光子数字转换效率高达42％，显示了250GHz以上的宽调带宽。此外，观察到级联的pockel和Kerr非线性光学效应，从而使光学信号的参数放大至单个设备中的独特波长。这项工作中证明的该方案为实现高效率频率转换提供了另一种方法，并有望在未来的通信，原子时钟，传感和成像方面进行研究。
Microresonators on a photonic chip could enhance nonlinear optics effects, thus are promising for realizing scalable high-efficiency frequency conversion devices. However, fulfilling phase matching conditions among multiple wavelengths remains a significant challenge. Here, we present a feasible scheme for degenerate sum-frequency conversion that only requires the two-mode phase matching condition. When the drive and the signal are both near resonance to the same telecom mode, an efficient on-chip photon-number conversion efficiency upto 42% was achieved, showing a broad tuning bandwidth over 250GHz. Furthermore, cascaded Pockels and Kerr nonlinear optical effects are observed, enabling the parametric amplification of the optical signal to a distinct wavelength in a single device. The scheme demonstrated in this work provides an alternative approach to realizing high-efficiency frequency conversion and is promising for future studies on communications, atom clocks, sensing, and imaging.
