Nonlinear frequency conversion is ubiquitous in laser engineering and quantum information technology. A long-standing goal in photonics is to integrate on-chip semiconductor laser sources with nonlinear optical components. Engineering waveguide lasers with spectra that phase-match to nonlinear processes on the same device is a formidable challenge. Here, we demonstrate difference-frequency generation in an AlGaAs Bragg reflection waveguide which incorporates the gain medium for the pump laser in its core. We include quantum dot layers in the waveguide that generate electrically driven laser light at ∼790 nm, and engineer the structure to facilitate nonlinear processes at this wavelength. We perform difference-frequency generation between 1540 nm and 1630 nm using the on-chip laser, which is enabled by the broad modal phase-matching of the AlGaAs waveguide, and measure normalized conversion efficiencies up to ()% W⁻¹ cm⁻². Our work demonstrates a pathway towards devices that utilize on-chip active elements and strong optical nonlinearities to enable highly integrated photonic systems-on-chip.

非线性频率转换在激光工程和量子信息技术中无处不在。光子学的一个长期目标是将片上半导体激光源与非线性光学元件集成在一起。在同一设备上设计具有与非线性过程相位匹配的光谱的波导激光器是一项艰巨的挑战。在这里，我们展示了在 AlGaAs 布拉格反射波导中的差频生成，该波导在其核心中包含了泵浦激光器的增益介质。我们在波导中包含量子点层，可产生约 790 nm 的电驱动激光，并设计该结构以促进该波长的非线性过程。我们使用片上激光器在 1540 nm 和 1630 nm 之间执行差频生成，)% W ^-1  cm ^-2。我们的工作展示了一种利用片上有源元件和强光学非线性来实现高度集成的片上光子系统的器件的途径。