Sm3+: LuPO4/LuYPO4晶体的光谱特性：蓝光二极管有效激发的潜在橙红色激光增益介质

IF 2.5 3区物理与天体物理 Q2 OPTICS

Optics Communications Pub Date : 2025-08-17 DOI:10.1016/j.optcom.2025.132341

Chunxiao Nie , Jianhong Li , Jia Gao , Shijia Sun , Qingtang Xu , Xinyue Shi , Yijian Wu , Xun Sun , Bingtao Zhang , Junjun Zhao , Bing Teng , Degao Zhong

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引用次数: 0

摘要

采用高温溶液法制备Sm:LuPO4和Sm:LuYPO4晶体。生长的晶体具有四方相，声子能量最大值位于990-1044 cm−1。测量了极化吸收光谱和荧光光谱，荧光寿命。Sm:LuYPO4晶体在405 nm处表现出较强的吸收峰，其极化吸收截面分别为（6.12±0.014）× 10−20 cm2 （π-极化）和（5.09±0.012）× 10−20 cm2 （σ-极化），明显高于Sm:LuPO4晶体的（2.64±0.004）× 10−20 cm2 （π-极化）和（1.40±0.003）× 10−20 cm2 （σ-极化）。利用Judd-Ofelt （J-O）理论，推导了J-O强度（Ω2， Ω4， Ω6）、荧光分支比和量子效率等关键参数。在声子辅助下，计算出Sm:LuYPO4晶体在601 nm处的最大发射截面为4.12 × 10−21 cm2。这些结果表明，Sm:LuPO4和Sm:LuYPO4晶体是一种很有前途的红橙色激光增益介质，可用于蓝色405 nm激光二极管抽运。

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Spectroscopic properties of Sm3+: LuPO4/LuYPO4 crystals: potential orange-red laser gain media capable of efficiently excited by blue laser diode

Sm:LuPO₄ and Sm:LuYPO₄ crystals were grown via the high-temperature solution method. The grown crystals possess tetragonal phases, and the maximum phonon energies were determined to be located at 990-1044 cm⁻¹. Polarized absorption and fluorescence spectra, fluorescence lifetimes were measured. Sm:LuYPO₄ crystal exhibits strong absorption peak at 405 nm with calculated polarized absorption cross-sections of (6.12 ± 0.014) × 10⁻²⁰ cm² (π-polarization) and (5.09 ± 0.012) × 10⁻²⁰ cm² (σ-polarization), significantly higher than the Sm:LuPO₄ crystal ((2.64 ± 0.004) × 10⁻²⁰ cm² for π-polarization and (1.40 ± 0.003) × 10⁻²⁰ cm² for σ-polarization). Utilizing Judd-Ofelt (J-O) theory, key parameters including the J-O intensities (Ω₂, Ω₄, Ω₆), fluorescence branching ratios, and quantum efficiency were derived. Facilitated by phonon assistance, the largest emission cross-section at 601 nm was calculated to be 4.12 × 10⁻²¹ cm² for the Sm:LuYPO₄ crystals in the σ-polarization direction. These results suggest that Sm:LuPO₄ and Sm:LuYPO₄ crystals are promising red-orange laser gain mediums for blue 405 nm laser diode pumping.

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来源期刊

Optics Communications 物理-光学

CiteScore

5.10

自引率

8.30%

发文量

681

审稿时长

38 days

期刊介绍： Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.