Pulse-burst passively Q-switched lasing in Yb-doped fluorapatite ceramics
Abstract We investigated the laser performance of ytterbium-doped non-cubic fluorapatite (Ca 10 (PO 4 ) 6 F 2 : FAP) ceramics composed of randomly oriented grains approximately 100 nm in size. Laser operation was evaluated under quasi-continuous-wave (QCW) operation, and a slope efficiency of 20% was achieved even in ceramics with randomly oriented crystal grains. Passively Q-switched pulse-burst operation was also examined using a Cr 4+ :YAG saturable absorber, yielding a pulse width of 1.9 ns and a maximum peak power of 2.5 kW. These results demonstrate the potential of non-cubic ceramic gain media for high-performance laser applications and support their further development for advanced laser technologies.
Authors
- Shinki Nakamura (ORCID: https://orcid.org/0000-0002-3104-9849)
- Hiroaki Furuse (ORCID: https://orcid.org/0000-0002-9008-1697)
- Kouichi TAKIMOTO (ORCID: https://orcid.org/0009-0007-7708-8134)
- Hiroyasu Sone
Institutions
- National Institute for Materials Science (JP)
- Ibaraki University (JP)
- Kitami Institute of Technology (JP)
Publication Details
- Journal
- Japanese Journal of Applied Physics
- Published
- 2026-11-06
- DOI
- https://doi.org/10.35848/1347-4065/aebf40
- Primary Topic
- Solid State Laser Technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Japan Society for the Promotion of Science
- Fusion Oriented REsearch for disruptive Science and Technology