| 准分子激光对钛宝石辐照作用的研究 |
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| 引用本文： | 蒋成勇,周国清,徐军,邓佩珍,干福熹.准分子激光对钛宝石辐照作用的研究[J].中国激光,2004,31(6):69-672. |
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| 作者姓名： | 蒋成勇 周国清 徐军 邓佩珍 干福熹 |
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| 作者单位： | 中国科学院上海光学精密机械研究所,上海,201800 |
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| 摘 要： | 采用波长为193 nm的ArF准分子激光对钛宝石进行辐照,对比辐照前后的吸收光谱,218 nm处的吸收增加幅度明显大于193 nm和266 nm的吸收峰.通过对不同品质因素(FOM)值样品在420 nm处的荧光强度检测,发现FOM值随荧光强度减小而增大,对比钛宝石样品在准分子激光辐照前后的420 nm荧光谱,可以发现荧光强度明显降低.在检测样品的电子顺磁共振(EPR)谱后发现,Ti3 离子的电子顺磁共振信号在辐照后强度明显增强.表明钛宝石在准分子激光辐照过程中有Ti4 离子向Ti3 离子转变趋势.
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| 关 键 词： | 激光技术 钛宝石 准分子激光 吸收谱 荧光谱 电子顺磁共振谱 |
| 收稿时间： | 2003/3/20 |
Effect of Irradiation on Ti-Doped Sapphire by Excimer Laser |
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| JIANG Cheng-yong,ZHOU Guo-qing,XU Jun,DEN Pei-zhen,GAN Fu-xi.Effect of Irradiation on Ti-Doped Sapphire by Excimer Laser[J].Chinese Journal of Lasers,2004,31(6):69-672. |
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| Authors: | JIANG Cheng-yong ZHOU Guo-qing XU Jun DEN Pei-zhen GAN Fu-xi |
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| Abstract: | Ti-doped sapphire crystals were irradiated by the argon fluoride (ArF) excimer laser. Comparing the spectra before and after irradiation, the increasing of absorption spectrum peak at 218 nm is much larger than that at 193 nm and 266 nm. Fluorescence spectra of different figure of merit (FOM) samples at 420 nm were measured, and the results indicated that fluorescence intensity decreased with increasing the FOM. The fluorescence intensity of samples at 420 nm decreased after the excimer laser irradiation. In the EPR spectrum of the Ti-doped sapphire, the intensity of the Ti 3+ signal increased after the irradiation. All results indicated that Ti 4+ ions changed to Ti 3+ ions during the irradiation of the excimer laser. |
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| Keywords: | laser technique Ti-doped sapphire excimer laser absorption spectrum fluorescence spectrum electron paramegnetic resonance spectrum |
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