Wathen Jeremiah J, Apiratikul Paveen, Richardson Christopher J K, Porkolab Gyorgy A, Carter Gary M, Murphy Thomas E
Opt Lett. 2014 Jun 1;39(11):3161-4. doi: 10.1364/OL.39.003161.
We present a side-by-side comparison of the nonlinear behavior of four passive AlGaAs ridge waveguides where the bandgap energy of the core layers ranges from 1.60 to 1.79 eV. By engineering the bandgap to suppress two-photon absorption, minimizing the linear loss, and minimizing the mode area, we achieve efficient wavelength conversion in the C-band via partially degenerate four-wave mixing with a continuous-wave pump. The observed conversion efficiency [Idler(OUT)/Signal(IN)=-6.8 dB] is among the highest reported in passive semiconductor or glass waveguides.
我们对四个无源AlGaAs脊形波导的非线性行为进行了并排比较，其中芯层的带隙能量范围为1.60至1.79电子伏特。通过设计带隙以抑制双光子吸收、最小化线性损耗并最小化模面积，我们通过与连续波泵浦进行部分简并四波混频，在C波段实现了高效的波长转换。观察到的转换效率[闲频光（输出）/信号光（输入）=-6.8分贝]是无源半导体或玻璃波导中报道的最高值之一。
