Micro-pulling down method-grown Er3+:LiCaAlF6 as prospective vacuum ultraviolet laser material

Marilou Cadatal-Raduban, Toshihiko Shimizu, Kohei Yamanoi, Kohei Takeda, Minh Hong Pham, Tomoharu Nakazato, Nobuhiko Sarukura, Noriaki Kawaguchi, Kentaro Fukuda, Toshihisa Suyama, Takayuki Yanagida, Yuui Yokota, Akira Yoshikawa

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22 Citations (Scopus)


We report the successful growth of trivalent erbium-doped lithium calcium aluminum fluoride (Er3+:LiCaAlF6) using the micro-pulling down method. Several absorption bands were observed at 139 nm (71,942 cm -1), 149 nm (67,114 cm-1), and 162 nm (61,728 cm -1), which can be ascribed to 4f→5d transitions in Er 3+. Evaluation of its optical properties using the 157-nm emission of a F2 laser reveal that it has a 163-nm vacuum ultraviolet fluorescence with 1.3-μs decay time, involving a transition originating from the high-spin state of the 4f 105d excited state configuration. This is one of the shortest emission wavelengths from solid-state materials reported at room temperature.

Original languageEnglish
Pages (from-to)167-169
Number of pages3
JournalJournal of Crystal Growth
Issue number1
Publication statusPublished - 2013 Jan 1


  • A2. Growth from melt
  • A2. Single crystal growth
  • B1. Fluorides
  • B3. Solid state lasers


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