Growth and optical properties of high-concentration Ho3+ ion-doped Ba(Y1−xLux)2F8 crystal for mid-infrared laser application

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2024-09-16 DOI:10.1016/j.optmat.2024.116128

引用次数: 0

Abstract

30mol% Ho:BaY₂F₈ (Ho:BYF) and 30mol% Ho, 20mol% Lu:BaY₂F₈ (Ho:BYLF) crystals with monoclinic phase were prepared by the Bridgman technique. After introducing Lu³⁺ ions, the thermal property of Ho:BYLF crystal was improved without significantly shortening the ⁵I₅ level lifetime of Ho³⁺ ion compared with Ho:BYF crystal. Under laser diode pumping at 889 nm, the emission peaks of both Ho:BYF and Ho:BYLF crystals in the range of 3–5 μm could be detected. The spectral parameters of the crystal are calculated in detail, and the cross sections of absorption, emission and gain are given. During laser pumping, the two crystals showed low pumping threshold, and Ho:BYF crystal obtained a maximum energy output of 5.22 mJ, while Ho:BYLF crystal tended to be saturated at 1 mJ due to the high concentration of Lu³⁺ ion. These two crystals show great application potential for laser operating in the mid-infrared range.

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用于中红外激光应用的高浓度 Ho3+ 离子掺杂 Ba(Y1-xLux)2F8 晶体的生长和光学特性

利用布里奇曼技术制备了 30mol% Ho:BaY2F8 (Ho:BYF) 和 30mol% Ho、20mol% Lu:BaY2F8 (Ho:BYLF) 单斜相晶体。引入 Lu3+ 离子后，Ho:BYLF 晶体的热性能得到改善，但与 Ho:BYF 晶体相比，Ho3+ 离子的 5I5 电平寿命并没有明显缩短。在 889 nm 波长的激光二极管泵浦下，Ho:BYF 和 Ho:BYLF 晶体都能检测到 3-5 μm 范围内的发射峰。详细计算了晶体的光谱参数，并给出了吸收、发射和增益的截面。在激光泵浦过程中，这两种晶体显示出较低的泵浦阈值，Ho:BYF 晶体获得了 5.22 mJ 的最大能量输出，而由于高浓度的 Lu3+ 离子，Ho:BYLF 晶体在 1 mJ 时趋于饱和。这两种晶体在中红外范围的激光器中显示出巨大的应用潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.