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説明:

Transparent Er-doped Y2O3 ceramics were fabricated using the spark plasma sintering (SPS) technique without any sintering additives to achieve fine-grained midinfrared laser ceramics. The average grain size of ceramics was typically 300 nm and their in-line optical transmittance in the 2.7 μm mid-infrared range reached approximately 99% of the theoretical value. The fluorescence spectra and lifetimes confirmed that the ceramics fabricated using SPS exhibited emission characteristics nearly identical to those fabricated using other sintering techniques. Despite the
numerous pores in the ceramics and considerably reduced transmittance at an excitation wavelength of 976 nm (approximately 90% of the theoretical value), a successful laser oscillation at 2.7 μm in the mid-infrared region was achieved. To the best of our knowledge, this is the first report on mid-infrared laser operation for finegrained ceramics having grain sizes below 500 nm. We believe that this study will contribute to further improvements in the optical properties and development of finegrained transparent ceramics as new laser materials, particularly non-cubic materials.

権利情報:

• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

キーワード: mid-infrared, spark plasma sintering, transparent ceramics, lasers

刊行年月日: 2024-09-06

出版者: Elsevier BV

掲載誌:

• Ceramics International (ISSN: 02728842) vol. 55 issue. 22 p. 46925-46931

研究助成金:

• Japan Science and Technology Agency
• Japan Society for the Promotion of Science 21H01611
• Japan Society for the Promotion of Science 23K21035
• Japan Science and Technology Agency Fusion Oriented REsearch for disruptive Science and Technology JPMJFR203S

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.4870

公開URL: https://doi.org/10.1016/j.ceramint.2024.09.044

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更新時刻: 2024-10-17 17:08:05 +0900

MDRでの公開時刻: 2026-09-05 08:25:05 +0900