Fabrication of high-efficiency Yb:Y2O3 laser ceramics without photodarkening

Qing Li, Jun Wang, Jie Ma, Meng Ni, Fan Yang, Peng Liu, Kuo Yang Lee, Hsing I. Hsiang, Deyuan Shen, Dingyuan Tang

研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)

摘要

High-efficiency Yb:Y2O3 laser ceramics were fabricated using the vacuum-sintering plus hot isostatic pressing (HIP) without sintering additives. High-purity well-dispersed nanocrystalline Yb:Y2O3 powder was synthesized using a modified co-precipitation method in-house. The green bodies were first vacuum sintered at a temperature as low as 1430°C and then HIPed at 1450°C. Finally, the samples were air annealed at 800°C for 10 h. Although no sintering aids were used, full density of the samples with excellent optical homogeneity and an inline transmission of 80% at 400 nm could be obtained. Moreover, photodarkening phenomenon was not detected in the ceramics. Preliminary laser experiment with the fabricated ceramics in a two-mirror cavity has demonstrated 32 W continuous-wave (CW) output at ∼1077 nm with an optical-to-optical conversion efficiency of 58.2%. To the best of our knowledge, this is so far the highest CW output power and optical-to-optical conversion efficiency achieved with the Yb3+-doped sesquioxide ceramics in a simple two-mirror cavity.

原文English
頁(從 - 到)3375-3381
頁數7
期刊Journal of the American Ceramic Society
105
發行號5
DOIs
出版狀態Published - 2022 5月

All Science Journal Classification (ASJC) codes

  • 陶瓷和複合材料
  • 材料化學

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