Fe:ZnMnSe激光活性材料在室温和低温下的性能

H. Jelínková, M. Doroshenko, V. Osiko, M. Němec, J. Šulc, M. Jelínek, D. Vyhlídal, V. Kubecek, M. Čech, N. Kovalenko, A. Gerasimenko
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引用次数: 6

摘要

在80 ~ 290 K温度范围内研究了Fe:Zn(1-x)Mn(x)Se的固溶体光谱和激光性能。采用两种不同锌锰比(Zn-Mn)的新型样品,用Mn含量x(0.1或0.2)描述,并将结果与已知的Fe:ZnSe晶体进行了比较。样品具有较宽的吸收光谱,最大吸收光谱在3 μm左右,因此采用Er:YAG激光(2.94 μm, 10 mJ, 120 ns)作为泵浦辐射源。Fe:ZnMnSe荧光光谱在3.5 ~ 5.5 μm范围内普遍较宽。当Fe:ZnMnSe x = 0.1时,290 K下的荧光光谱范围为3.5 ~ 5.5 μm。当温度降至80k时,光谱主要在中红外部分变窄,但在80k时荧光仍高达5 μm。在Fe:ZnMnSe x = 0.2的情况下,即使在80k下,荧光也向中红外偏移5.2 μm。荧光寿命从80 K时的几十个us下降到240 K时的1个us。两种新型Fe:ZnMnSe晶体均在80 ~ 290 K的温度范围内成功地实现了激光振荡。当x = 0.1时,80 K时中心波长为~4.2 μm,当温度升高至290 K时,中心波长几乎呈线性增加,达到~4.75 μm。当Fe:ZnMnSe x = 0.2时,随着温度从80 K增加到290 K,输出波长从~4.3 μm增加到~4.8 μm。激光谱线宽度约为300 nm。与Fe:ZnSe晶体相比,可以清楚地观察到激光输出波长向中红外区域偏移,而激光腔内没有任何光谱可调谐元件。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Fe:ZnMnSe laser active material properties at room and cryogenic temperature
Fe:Zn(1-x)Mn(x)Se solid solution spectroscopic and laser properties were investigated in the temperature range 80- 290 K. Two novel samples with different zinc - manganese (Zn–Mn) ratio described by the Mn content x (0.1 or 0.2) were used and the results were compared to the known Fe:ZnSe crystal. The samples had a broad absorption spectra with the maximum around 3 μm and therefore an Er:YAG laser (2.94 μm, 10 mJ, 120 ns) was used as a pump radiation source. The Fe:ZnMnSe fluorescence spectra are generally broad in the range 3.5 – 5.5 μm. In the case of Fe:ZnMnSe x = 0.1, the fluorescence spectrum at 290 K is ranging from 3.5 to 5.5 μm. Lowering the temperature down to 80 K lead to the spectral narrowing mainly in the mid-IR part, but the fluorescence is still up to 5 μm at 80 K. In the case of Fe:ZnMnSe x = 0.2 the fluorescence is shifted towards mid-IR up to 5.2 μm even at 80 K. The fluorescence lifetime decreases from tens of us at 80 K down to 1 us at 240 K. The laser oscillations were successfully achieved with both novel Fe:ZnMnSe crystals in the temperature range 80- 290 K. In the case of x = 0.1, the central wavelength was ~4.2 μm at 80 K and the temperature increase up to 290 K led to almost linear increase of the wavelength up to ~4.75 μm. The tendency was similar in the case of Fe:ZnMnSe x = 0.2: the output wavelength increased from ~4.3 μm up to ~4.8 μm with the temperature increase from 80 to 290 K. The laser spectral linewidth was about 300 nm. In comparison with the Fe:ZnSe crystal, the laser output wavelength shift toward mid-IR region without any spectrally tunable element in the laser cavity can be clearly observed.
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