作为 640-670 纳米波段辐射平衡激光材料的 LiNbO3:Ho3+ 晶体

IF 2.4 4区材料科学 Q2 CRYSTALLOGRAPHY

Crystals Pub Date : 2024-08-26 DOI:10.3390/cryst14090760

Gagik Demirkhanyan, Narine Babajanyan, Frida Voskanyan, Ninel Kokanyan, Marco Bazzan, Edvard Kokanyan

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引用次数: 0

摘要

用 Czochralski 法生长了掺钬的同位铌酸锂（LiNbO3:Ho，LN:Ho）晶体。室温下记录了 LN:1at% Ho3+ 晶体的吸收情况。在对 LN:1at% Ho3+ 晶体的发射和吸收光谱进行分析的基础上，从理论上研究了在室温下获得与流形 5F5 和 5I8 的星际跃迁相对应的 640-670 nm 波长区域的辐射平衡（RB）激光的可能性。计算了 RB 激光参数，并确定了最佳泵浦和激光波长：λOP=652.1 nm，λOL=653.6 nm。在所考虑的波长区域内，获得了 RB 激光效率和辐射放大率值：Feff=3.23×10-22 cm2，Fgain=6.08×10-22 cm2。

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LiNbO3:Ho3+ Crystal as a Material for Radiation-Balanced Lasing in the 640–670 nm Region

Holmium-doped congruent-composition lithium niobate (LiNbO3:Ho, LN:Ho) crystals were grown by the Czochralski method. The absorption of the LN:1at% Ho3+ crystal was recorded at room temperature. On the basis of the analysis of emission and absorption spectra of the LN:1at% Ho3+ crystal, the possibilities of obtaining, at room temperature, radiation-balanced (RB) lasing in the region of 640–670 nm wavelengths corresponding to the inter-Stark transitions of manifolds 5F5 and 5I8 was theoretically investigated. The RB lasing parameters were calculated and the optimal pump and laser wavelengths were determined: λOP=652.1 nm, λOL=653.6 nm. The values for the RB lasing efficiency and radiation amplification in the considered wavelength region were obtained: Feff=3.23×10−22cm2, Fgain=6.08×10−22 cm2.

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来源期刊

Crystals CRYSTALLOGRAPHYMATERIALS SCIENCE, MULTIDIS-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

4.20

自引率

11.10%

发文量

1527

审稿时长

16.12 days

期刊介绍： Crystals (ISSN 2073-4352) is an open access journal that covers all aspects of crystalline material research. Crystals can act as a reference, and as a publication resource, to the community. It publishes reviews, regular research articles, and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on article length. Full experimental details must be provided to enable the results to be reproduced. Crystals provides a forum for the advancement of our understanding of the nucleation, growth, processing, and characterization of crystalline materials. Their mechanical, chemical, electronic, magnetic, and optical properties, and their diverse applications, are all considered to be of importance.