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arXiv 2109.13872physics.optics
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室温下18 K激光冷却掺Yb石英光纤

Laser Cooling of a Yb Doped Silica Fiber by 18 Kelvin From Room Temperature

Brian Topper, Mostafa Peysokhan, Alexander R. Albrecht, Angel S. Flores, Stefan Kuhn, Denny Haessner, Sigrun Hein, Christian Hupel, Johannes Nold, Nicoletta Haa… 展开作者

Brian Topper, Mostafa Peysokhan, Alexander R. Albrecht, Angel S. Flores, Stefan Kuhn, Denny Haessner, Sigrun Hein, Christian Hupel, Johannes Nold, Nicoletta Haarlammert, Thomas Schreiber, Mansoor Sheik-Bahae, Arash Mafi

摘要:

在真空中用20W的1035nm光抽运掺镱石英光纤,使光纤温度降至室温以下18.4K。在空气中,用相同的20W泵观察到比环境温度低3.6K的冷却。用热成像相机和差示发光测温法测量温度。冷却效率计算为1.2 ± 0.1%。光纤的纤芯共掺杂有Al 3+,Al与Yb的比率为6:1,以允许更大的Yb浓度和增强的激光冷却。

英文摘要:

A ytterbium doped silica optical fiber has been cooled by 18.4K below ambient temperature by pumping with 20W of 1035nm light in vacuum. In air, cooling by 3.6K below ambient was observed with the same 20W pump. The temperatures were measured with a thermal imaging camera and differential luminescence thermometry. The cooling efficiency is calculated to be 1.2+-0.1%. The core of the fiber was codoped with Al3+ for an Al to Yb ratio of 6:1, to allow for a larger Yb concentration and enhanced laser cooling.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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