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首页> 外文期刊>Optical Materials >Growth, thermal, and spectroscopic properties of a Cr,Yb,Ho,Eu:YAP laser crystal
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Growth, thermal, and spectroscopic properties of a Cr,Yb,Ho,Eu:YAP laser crystal

机译：Cr，Yb，Ho，Eu：YAP激光晶体的生长，热学和光谱性质

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摘要

A new Cr,Yb,Ho,Eu:YAlO_3(YAP) laser crystal was successfully grown by the Czochralski method. Thermal properties were investigated along the α, b, and c crystalline axes. Results indicate that the Cr,Yb,-Ho,Eu:YAP crystal has large anisotropic thermal expansion and that the suitable crystal growth direction is the b axis. The Debye temperatures were fitted, and the lattice vibration frequencies were calculated. Spectroscopic measurements show that Cr~(3+) and Yb~(3+) can be used as sensitizers of Ho~(3+) ions, and Eu~(3+) ions can play a role of the deactivator in decreasing the lifetime of laser lower level ~5I_7 from 8.69 ms to 1.89 ms, which is beneficial in decreasing laser threshold and increasing laser conversion efficiency. All these findings suggest that the Cr,Yb,Ho,Eu:YAP crystal is a new potential candidate for realizing 2.8-3 μm laser output pumped by a 970 nm laser diode or pulsed flash lamp.
机译：通过Czochralski法成功地生长了一种新的Cr，Yb，Ho，Eu：YAlO_3（YAP）激光晶体。沿α，b和c晶轴研究了热性能。结果表明，Cr，Yb，-Ho，Eu：YAP晶体具有较大的各向异性热膨胀，并且合适的晶体生长方向为b轴。拟合德拜温度，并计算晶格振动频率。光谱测量表明，Cr〜（3+）和Yb〜（3+）可以用作Ho〜（3+）离子的敏化剂，Eu〜（3+）离子可以起到减活剂的作用，降低其寿命较低的〜5I_7激光从8.69毫秒降低到1.89毫秒，这有利于降低激光阈值并提高激光转换效率。所有这些发现表明，Cr，Yb，Ho，Eu：YAP晶体是实现970 nm激光二极管或脉冲闪光灯泵浦的2.8-3μm激光输出的新的潜在候选者。

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