Laser cooling of Yb³⁺-doped BaY₂F₈ single crystal

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• 作者：Stefano Bigotta ; Daniela Parisi ; Lucia Bonelli ; Alessandra Toncelli ; Alberto Di Lieto and Mauro Tonelli
• 关键词：Laser cooling ; Anti-Stokes ; Rare earth compounds ; Barium yttrium fluoride
• 刊名：Optical Materials
• 出版年：2006
• 出版时间：August 2006
• 年：2006
• 卷：28
• 期：11
• 页码：1321-1324
• 全文大小：131 K

文摘

We observed laser cooling in a 2.5 % Yb³⁺-doped BaY₂F₈ single crystal. Single crystals have been grown by the Czochralski technique. The absorption spectra and the visible emission properties have been measured at room temperature. A temperature drop of almost 4 K was obtained by pumping the crystal with 3 W of laser radiation at 1025 nm in single pass configuration.