Growth and spectral properties of Cr³⁺:KAl(MoO₄)₂ crystal

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• 作者：Guojian Wang ; Xiumei Han ; Mingjun Song ; Zhoubin Lin ; Guofu Wang ; Xifa Long
• 关键词：Cr³⁺ ; KAl(MoO₄)₂ crystal ; Optical properties ; Crystal growth
• 刊名：Materials Letters
• 出版年：2007
• 出版时间：July 2007
• 年：2007
• 卷：61
• 期：18
• 页码：3886-3889
• 全文大小：372 K

文摘

The Cr³⁺:KAl(MoO₄)₂ single crystal was grown by top seeding solution growth method (TSSG). Based on the absorption and emission spectra, the crystal field strength Dq, the Racah parameters B and C, the effective phonon energy ω and the Huang–Rhys factor S were calculated: Dq = 1494.8 cm^{− 1}, B = 585.5 cm^{− 1} and C = 3049 cm^{− 1}, ħω = 373.8 cm^{− 1} and the Huang–Rhys factor S = 3.74, respectively. The value Dq/B = 2.55 indicates that Cr³⁺ ion occupies the strong crystal field site in KAl(MoO₄)₂ crystal. A comparison of crystal field parameters for Cr³⁺:KAl(MoO₄)₂ with other Cr³⁺-doped crystals was presented. The results of spectral measurement show that Cr³⁺:KAl(MoO₄)₂ may be a potential candidate for broadband laser applications.