光源功率对胃癌患者血清拉曼光谱的影响  

The Impact of Light Power on the Raman Spectrum of Serums of Gastric Cancer Patients

作　　者：陶家友[1] 冷爱民[2] 王华秀[2] 徐代升[1] 周菊林[1] 

机构地区：[1]湖南理工学院物理与电子学院,湖南岳阳414006 [2]中南大学湘雅医学院,长沙410000

出　　处：《湖南理工学院学报（自然科学版）》2010年第3期46-48,共3页Journal of Hunan Institute of Science and Technology(Natural Sciences)

基　　金：湖南省教育厅项目(08C396)

摘　　要：为了研究激光功率对胃癌患者血清拉曼光谱的影响,对不同功率下胃癌患者血清的拉曼光谱进行了分析.结果表明:功率太低会使样品中的拉曼活性分子不能充分激发,得到的拉曼光谱受散射本底信号影响较大;功率太高会引起样品发生光化反应.这两种情况都会使测量误差增大.检测时激光最佳的功率约11mW.To study the impact of light power on the Raman spectrum of serum of gastric cancer patients, this paper analyzes the Raman spectra of serum of gastric cancer patients with different laser power. The results show that： if the power is too low, the Raman active molecules of the samples can not be fully excited, thus the impact of scattering background signal on Raman spectra will increases; if the power is too high, it will cause photochemical reactions in the samples. Both situations will cause the measurement error to increase. The best laser power for detection is about 11 mW.

关 键 词：功率 胃癌 血清 激光拉曼光谱 

分 类 号：Q631[生物学—生物物理学]