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説明:

Transparent ceramics of Nd3+-doped (Ca0.5Sr0.5)10(PO4)6F2 (CS-FAP), a solid
solution of hexagonal fluorapatite Ca10(PO4)6F2 (C-FAP) and Sr10(PO4)6F2 (S-FAP), was
successfully fabricated. Laser oscillation from Nd:CS-FAP was demonstrated for the first time.
The ceramics consisted of fine grains with an average grain size of approximately 100 nm.
Despite a non-cubic crystal structure, light scattering due to birefringence was small, and the
total loss coefficient near 1 μm was approximately 0.5 cm−1. The full width at half maximum
(FWHM) of the fluorescence spectra was about 3.5 nm (31 cm−1) at 1 μm and 6.4 nm (36 cm−1)
at 1.3 μm, respectively. They were substantially broader than those of C-FAP and S-FAP (both
approximately 1 nm), resulting from lattice distortion due to solid solution formation. The
fluorescence peak wavelengths and laser oscillation wavelengths (1061 nm and 1333 nm) were
intermediate between those of C-FAP and S-FAP. The Ca to Sr ratio can be controlled, providing
compositional design flexibility and the potential of CS-FAP ceramics as novel ultrashort-pulse
laser materials.

権利情報:

• In Copyright
  

  © 2026 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

キーワード: Transparent ceramics, Lasers, Spark plasma sintering, Fluorapatite

刊行年月日: 2026-04-01

出版者: Optica Publishing Group

掲載誌:

• Optical Materials Express (ISSN: 21593930) vol. 16 issue. 4 p. 992-1000

研究助成金:

• JPMJFR203S

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1364/ome.591337

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更新時刻: 2026-04-02 17:24:20 +0900

MDRでの公開時刻: 2026-04-03 08:26:00 +0900