[19a-131-1~11] 15.7 Crystal characterization, impurities and crystal defects

[19a-131-4] The Effect of Different Ce³⁺ Ion Distribution on Lasing Properties of Ce³⁺:LiCaAlF₆ Single Crystal

〇Shusaku Terakawa¹, Shingo Ono¹, Marilou Cadatal-Raduban², Minh Hong Pham³, Takaya Taniguchi⁴, Kohei Yamanoi⁴, Takafumi Hirata⁵ (1.Nagoya Institute of Technology, 2.Massey Univ., 3.VAST, 4.Osaka Univ., 5.Tokyo Univ.)

Keywords:multi-photon luminescence, laser medium

In this work, we will report about the effect of different Ce³⁺ ion distribution in Ce³⁺:LiCaAlF6 single crystal on lasing properties. By measuring the multi-photon luminescence, we found that luminescence intensity distribution differs depending on areas within the crystal. From the result of LA-ICPMS, we confirmed that this difference relates to the heterogeneity of Ce. We also investigated the lasing properties at three areas with different Ce³⁺ ion distribution, measured by multi-photon microscope. From the result, highest slope efficiency and lowest lasing threshold were obtained from the area with uniform Ce³⁺ ion distribution.