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Title: Fabrication of high-efficiency Yb:Y₂O₃ laser ceramics without photodarkening
Authors: Li, Qing
Wang, Jun
Ma, Jie
Ni, Meng
Yang, Fan
Liu, Peng
Lee, Kuo Yang
Hsiang, Hsing-I.
Shen, Deyuan
Tang, Dingyuan
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2022
Source: Li, Q., Wang, J., Ma, J., Ni, M., Yang, F., Liu, P., Lee, K. Y., Hsiang, H., Shen, D. & Tang, D. (2022). Fabrication of high-efficiency Yb:Y₂O₃ laser ceramics without photodarkening. Journal of the American Ceramic Society, 105(5), 3375-3381.
Project: A1883C0003
Journal: Journal of the American Ceramic Society
Abstract: 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.
ISSN: 0002-7820
DOI: 10.1111/jace.18305
Rights: © 2022 The American Ceramic Society. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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