苯及其衍生物可靠性能检测 | 石墨混合物中的固体三硝基甲苯的拉曼和时间分辨脉冲光声光谱学:用于识别双共振光学声子信号-北京欧兰科技发展有限公司

方案摘要

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应用领域	石油/化工
检测样本	苯及其衍生物
检测项目	可靠性能
参考标准	暂无

采用立陶宛Ekspla公司PL2250型皮秒脉冲Nd:YAG激光器输出的532nm和 1064nm波长，30ps脉宽,10Hz重复频率的激光脉冲，激发石墨混合物中的固体三硝基甲苯观测其拉曼和时间分辨脉冲光声光谱用于识别双共振光学声子信号。

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配置单

PL2250 闪光灯泵浦皮秒Nd:YAG激光器
型号：PL2250

¥50万 - 100万
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方案详情

The optical phonon waves transfer mechanism between pure graphite (GP) and trinitrotoluene (TNT) using 1064 nm as an excitation wavelength based on the double resonant Raman effect and the pulsed photoacoustic (PA) technique has been investigated. The study was carried out at a different weight percentage of GP within TNT with respect to the two excitation wavelengths of 532 nm and 1064 nm (30 ps, 10 Hz, Q-switched Nd: YAG
laser). The equal and double proportional matrix of the GP and TNT (solid samples) generate a strong PA signal with high quality factor (Q-factor) due to the interaction of optical phonons of GP and TNT in the same phase. The Raman spectra, recorded at 785 nm wavelength provides an insight on the pi-electron coupling between the GP and TNT. The obtained experimental results confirm that the pure GP and its derivatives, which have a SP2/
SP3 hybridization, can be used to develop a new sensing optode for the detection and identification of explosive molecules in the visible and near-IR wavelengths range.

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北京欧兰科技发展有限公司

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