论文标题
基于多截面波导的中红外量子级联激光频率梳子
Mid-infrared quantum cascade laser frequency combs based on multi-section waveguides
论文作者
论文摘要
我们提出了带有工程波导的量子级联激光器（QCL）频率梳子设备，用于管理分散。 QCL波导由具有不同波导宽度的多个部分组成。波导的狭窄和宽部分的设计方式是为了补偿彼此的组速度色散（GVD），从而为QCL产生平坦且略微负的GVD。 QCL在激光器动态范围的大部分中表现出连续的梳子操作。在超过300 mA宽的电流范围内实现了强和窄的宽线互换器。梳子设备的功能还相当高的输出功率（> 380 MW）和宽光带宽（> 55 cm-1）
We present quantum cascade laser (QCL) frequency comb devices with engineered waveguides for managing the dispersion. The QCL waveguide consists of multiple sections with different waveguide widths. The narrow and wide sections of the waveguide are designed in a way to compensate the group velocity dispersion (GVD) of each other and thereby produce a flat and slightly negative GVD for the QCL. The QCL exhibits continuous comb operation over a large part of the dynamic range of the laser. Strong and narrow-linewidth intermode beatnotes are achieved in more than 300 mA wide operation current range. The comb device features also considerably high output power (>380 mW) and wide optical bandwidth (>55 cm-1)
