The temperature dependence of the Raman scattering cross section of first and second order Stokes and anti Stokes Raman processes was discussed theoretically.
从理论上讨论了一阶和二阶斯托克斯与反斯托克斯拉曼散射截面的温度依赖关系；在２９３Ｋ至４０１Ｋ的温度范围内，测量了ＢａＴｉＯ３单晶斯托克斯和反斯托克斯过程的偏振拉曼光谱；通过对ＢａＴｉＯ３单晶斯托克斯和反斯托克斯拉曼光谱的综合分析，证实在Ｘ（ＺＺ）Ｙ几何配置下测量到的位于２７５和５１４ｃｍ－１处的强峰为一阶拉曼光谱。
The fibre-optic preforms were produced, the fluoride fibers were fabricated, the anti-stokes fluorescence cooling mechanism was preliminarily researched.
用高纯原料制备了掺镱 1% ,2 % ,3 % m ol的氟锆酸盐玻璃 ,并研制了有芯皮料的氟锆酸盐光纤预制棒 ,拉制了光纤 ,并对它们的吸收谱进行了研究 ,初步探索了它们反斯托克斯荧光制冷机理 。
Spectrum analysis by fluorescence spectrophotometerreveals that the materials appear to produce anti-stokes fluorescence peak with excitation sources atwavelengths longer than those corresponding to the peak of the luminescent bend.
荧光光谱显示,以630nm激发,反斯托克斯荧光峰位于595nm,能量差为0。
The anti Stokes lines with Raman shift 102 and 45 cm -1 were observed.
报道了用 5 32nm激光抽运LDS75 1染料产生 72 0— 780nm可调谐染料激光输出的同时 ,观察到喇曼频移为 10 2和 45cm- 1 的反斯托克斯线 ,前者谱线较强 ,后者较弱 。
In the process of experiment investigation on photonic crystal fiber fabricated by ourselves,by increasing the central wavelength of pump pulseλ_0 gradually,the frequency spectrum of pump pulse is widening gradually withλ_0 approaching toλ_D,at the same time,and the intensity of anti-Stokes wave is increasing gradually with the transform-efficiency being enhanced.
在对自行设计的光纤进行实验研究的过程中,通过逐渐增加泵浦脉冲的中心波长λ_0发现随着λ_0逐渐接近零色散波长λ_D,在一系列非线性效应的作用下泵谱脉冲的频谱逐渐展宽,同时其转化效率也逐渐增加,在短波段的反斯托克斯波的强度也逐渐增加。
This paper, according to the sensibility of anti-stokes light to temperature, making use of many advantages of optical fiber communication, and matching with the electronic control and compensation circuit, designs the system of measuring temperature fields distributed optical fiber sensor for grain depot, the system can come true the stock of corps temperature s real-time controlli.
为此,根据反斯托克斯光对温度的敏感性,利用光纤传输信号的种种优点,配以电子处理与补偿电路,设计了可用于粮库测温的分布式光纤温度场测量系统,该系统可实现对库存粮食温度的实时监控与调整。