Growth of Single Crystal Rare-Earth-Doped Barium Yttrium Fluoride for IR Pumped Visible Lasers

紧凑的蓝绿色激光器用于光学数据存储、复印和生物医学诊断。红外泵浦可见上转换激光器是一类特别有前途的蓝绿色激光器。为了使红外泵浦可见激光器的发展超越目前的发展水平，需要可靠的氟化钡钇材料来源。这种特殊的主体，掺杂了镱和铥，被用于第一个在室温下工作的红外泵浦可见激光器。PI建议用Czochralski技术研究稀土掺杂氟化钡钇的生长。我们相信我们专有的氟化物生长技术，已用于生长大孔的YLF和LiSAF可以适应氟化钡钇的生长。高质量稀土掺杂氟化钡钇生长技术的发展有望加速红外泵浦上转换激光器的发展。导致它们最终进入商业市场。

Compace blue-green lasers are required for applications in optical data storage, reprographics and biomedical diagnostics. IR-pumped visible upconversion lasers are a particularly promising class of blue-green lasers. In order for the development of IR pumped visible lasers to progress beyond its currentl level of development, a reliable source of barium yttrium fluroide material is required. This particular host, doped with ytterbium and thulium was used in the first IR pumped visible laser to operate at room temperature. The PI proposes to investigate the growth of rare-earth-doped barium yttrium fluoride by the Czochralski technique. We believe that our proprietary fluoride growth technology, which has been used to grow large boules of YLF and LiSAF can be adapted to the growth of barium yttrium fluoride. The development of growth techniques for high quality rare-earth-doped barium yttrium fluoride is expected to accelerate the development of IR-pumped upconversion lasers, leading to their ultimate introduction into the commerical marketplace.