Growth and Spectral Properties of Er3+;LiYF4 Single Crystal

doi:10.3724/SP.J.1077.2011.00923

Journal of Inorganic Materials ›› 2011, Vol. 26 ›› Issue (9): 923-928.DOI: 10.3724/SP.J.1077.2011.00923

• Research Paper • Previous Articles Next Articles

Growth and Spectral Properties of Er³⁺;LiYF₄ Single Crystal

YU Xing-Yan¹, CHEN Hong-Bing², WANG Shu-Jing², ZHOU Yan-Fei³, WU An-Hua³, DAI Shi-Xun¹

(1. Institute of Information Science and Engineering, Ningbo University, Ningbo 315211, China; 2. Institute of Material Science and Chemistry Engineering, Ningbo University, Ningbo 315211, China; 3. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China)

Received:2010-10-20 Revised:2010-12-21 Published:2011-09-20 Online:2011-08-19
Supported by:
National Natural Science Foundation of China (61078056, 60878042); Excellent Youth Foundation of Zhejiang Scientific Committee (R1101263); The Ningbo Optoelectronic Materials and Devices Creative Team (2009B21007); K.C.Wong Magna Fund in Ningbo University

Abstract

Abstract: Er³⁺: LiYF₄ single crystal was grown by the Bridgman method under non-vacuum atmosphere. The single crystal was in size of 9mm×68mm with 1mol% concentration of Er³⁺ ions. Optical properties of the single crystal including the refractive index, UV and IR transmission spectra, absorption spectrum, near-infrared emission spectrum under 980nm excitation and mid-infrared emission spectrum under 792nm excitation were measured. The intensity parameters (?t, t=2,4,6), oscillator strength(fcal), transition probabilities (A), branching ratios (B) and radiation lifetimes (t_rad) of Er³⁺ ions in the LiYF₄ were estimated by using the Judd-Ofelt theory. The near- and mid-infrared fluorescence properties of the sample were discussed. The results indicate that near infrared fluorescence at 1.5μm corresponding to the Er³⁺: ⁴I_13/2→⁴I_15/2 transition is observed under 980nm excitation while mid-infrared fluorescence at 3.0μm corresponding to the Er³⁺: ⁴I_11/2→⁴I_13/2 transition is detected under 792 nm excitation. The reason that caused the weakening of fluorescence at 3.0μm is analyzed.

Key words: Er³⁺: LiYF₄single crystal, mid-infrared luminescence, absorption spectra, optical parameters

CLC Number:

TQ174
O482

YU Xing-Yan, CHEN Hong-Bing, WANG Shu-Jing, ZHOU Yan-Fei, WU An-Hua, DAI Shi-Xun. Growth and Spectral Properties of Er³⁺;LiYF₄ Single Crystal[J]. Journal of Inorganic Materials, 2011, 26(9): 923-928.

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Growth and Spectral Properties of Er³⁺;LiYF₄ Single Crystal

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