论文标题
蓝色/紫外线频率梳子的III二硝酸盐微谐合器的高级分散工程
Advanced dispersion engineering of a III-Nitride micro-resonator for a blue/UV frequency comb
论文作者
论文摘要
提出了一种系统的分散工程方法，用于设计用于蓝色/紫外频率梳子的III二硝酸盐微谐波。这项努力的动机是满足需要紧凑，连贯，多波长的光子光源，例如，可以与$^{171} {\ textrm {\ textrm {yb}}}^{+} $ ion进行光学的集成芯片，用于光学传感，用于光学传感，时光量，定时计算和量子计算。面临的挑战是要克服原本理想的（即低损失和大型Kerr-coeff）材料家族所表现出的正常材料色散，因为这是Bright-Soliton Kerr Comb Generation的先决条件。所提出的方法利用了耦合波导中避免的跨现象，以在所需的波长范围内实现强异常分散。最终的设计显示了广泛的分散响应可调节性，并且可以通过当前的Algan半导体的最新生长和制造方法来实现。连续波激光泵浦下腔内场的时空演化的数值模拟表明，这种结构能够产生宽带蓝色/UV Bright-Soliton Kerr频率梳子。
A systematic dispersion engineering approach is presented toward designing a III-Nitride micro-resonator for a blue/UV frequency comb. The motivation for this endeavor is to fill the need for compact, coherent, multi-wavelength photon sources that can be paired with, e.g., the $^{171}{\textrm{Yb}}^{+}$ ion in a photonic integrated chip for optical sensing, time-keeping, and quantum computing applications. The challenge is to overcome the normal material dispersion exhibited by the otherwise ideal i.e., low-loss and large-Kerr-coefficient) AlGaN family of materials, as this is a prerequisite for bright-soliton Kerr comb generation. The proposed approach exploits the avoided-crossing phenomenon in coupled waveguides to achieve strong anomalous dispersion in a desired wavelength range. The resulting designs reveal a wide range of dispersion response tunability, and are realizable with the current state-of-the-art growth and fabrication methods for AlGaN semiconductors. Numerical simulations of the spatio-temporal evolution of the intra-cavity field under continuous-wave laser pumping indicate that such a structure is capable of generating a broadband blue/UV bright-soliton Kerr frequency comb.
