Mid-infrared emissions and multiphonon relaxation in Dy~(3+)-doped chalcohalide glasses

Yong Beom Shin; Jong Heo

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Mid-infrared emissions and multiphonon relaxation in Dy~(3+)-doped chalcohalide glasses

机译：掺Dy〜（3+）的卤化卤化物玻璃的中红外发射和多声子弛豫

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Effects of Br addition into Ge_(25)Ga_(10)S_(65) glasses on the mid-infrared emissions and multiphonon relaxation of Dy~(3+) were investigated. Measured lifetimes of three energy levels emitting the infrared fluorescences increased with the addition of Br. Temperature-dependence of the multiphonon relaxation rates (W_(mp) = 1/#tau#_m - 1/#tau#_R at low concentration of Dy~(3+)) showed the dominance of 5-phonon relaxation process at 375 cm~(-1) vibration associated with the asymmetric stretching of GeS_4 tetrahedra. A decrease in the multiphonon relaxation rates with Br addition is associated with an increase of the width of the ~6F_(11/2)-~6H_(9/2) manifolds of Dy~(3+). It resulted in thermal depopulation of the lowest Stark component and thereby, decreased the multiphonon relaxation rates in Br-containing glasses.

机译：研究了Ge_（25）Ga_（10）S_（65）玻璃中Br的添加对Dy〜（3+）中红外发射和多声子弛豫的影响。溴的添加增加了发出红外荧光的三个能级的测量寿命。多声子弛豫速率的温度依赖性（W_（mp）= 1 /＃tau＃_m-1 /＃tau＃_R在低浓度的Dy〜（3+）下）显示了在375 cm处5声子弛豫过程的主导地位与GeS_4四面体的不对称拉伸相关的〜（-1）振动。随着Br的加入，多声子弛豫速率的降低与Dy〜（3+）的〜6F_（11/2）-〜6H_（9/2）流形宽度的增加有关。这导致最低的Stark组分发生热分解，从而降低了含Br玻璃中多声子的弛豫速率。

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《Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites》 |1999年第0期|共7页
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Yong Beom Shin; Jong Heo;
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1. Mid-infrared emissions and multiphonon relaxation in Dy~(3+)-doped chalcohalide glasses [J] . Yong Beom Shin, Jong Heo Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites . 1999,第0期

机译：掺Dy〜（3+）的卤化卤化物玻璃的中红外发射和多声子弛豫
2. Investigation of mid-IR luminescence properties and energy transfer in Dy~(3+)-doped and Dy~(3+), Tm~(3+)-codoped chalcohalide glasses [J] . Wei Meng, Yantao Xu, Haitao Guo, Optical Materials . 2013,第8期

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Mid-infrared emissions and multiphonon relaxation in Dy~(3+)-doped chalcohalide glasses

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