Thales Research and Technology, 1 Avenue Augustin Fresnel, 91767 Palaiseau Cedex, France.
Opt Lett. 2010 Feb 15;35(4):505-7. doi: 10.1364/OL.35.000505.
We demonstrate what is to our knowledge the first realization of an optical parametric amplifier in orientation-patterned GaAs amplifying the emission of a quantum-cascade laser (QCL) with a distributed-feedback (DFB) structure. We report a gain as high as 53 dB at 4.5 mum, in good agreement with theoretical calculations. The narrow spectral linewidth and the good beam quality of this source are imposed by the DFB-QCL, while high-peak-power emission is achieved through the parametric amplification. These characteristics are of valuable interest for long-range spectroscopy.
我们展示了据我们所知的第一个在取向图案化 GaAs 中实现的光参量放大器，该放大器放大了具有分布式反馈（DFB）结构的量子级联激光（QCL）的发射。我们报告了在 4.5 µm 处高达 53 dB 的增益，与理论计算吻合良好。这种光源的窄光谱线宽和良好的光束质量是由 DFB-QCL 施加的，而通过参量放大实现了高峰值功率发射。这些特性对于远程光谱学具有重要意义。
