论文标题
激光诱导的抗螺旋体荧光冷却ytterbium掺杂的二氧化硅玻璃通过6 kelvin以上
Laser-induced anti-Stokes fluorescence cooling of ytterbium-doped silica glass by more than 6 Kelvin
论文作者
论文摘要
当相干激光照亮材料时，可以实现固体的激光冷却，并通过导致的抗孔荧光来提取热量。在过去的一年中，在散装样品和纤维中，在YB掺杂的二氧化硅玻璃中成功证明了净固态激光冷却。在这里，我们通过一个数量级提高了先前发布的结果，并报告了超过6K的冷却，低于环境温度。该结果是二氧化硅玻璃的固态激光冷却中达到的最低温度，迄今为止，我们的最佳水平。我们介绍了使用在1035nm波长下运行的20W激光进行实验的详细信息，并使用热摄像机和差异发光温度计技术进行了温度测量。
Laser cooling of a solid is achieved when a coherent laser illuminates the material, and the heat is extracted by resulting anti-Stokes fluorescence. Over the past year, net solid-state laser cooling was successfully demonstrated for the first time in Yb-doped silica glass in both bulk samples and fibers. Here, we improve the previously published results by one order of magnitude and report more than 6K of cooling below the ambient temperature. This result is the lowest temperature achieved in solid-state laser cooling of silica glass to date to the best of our knowledge. We present details on the experiment performed using a 20W laser operating at 1035nm wavelength and temperature measurements using both a thermal camera and the differential luminescence thermometry technique.
