摘要
为了建立棱镜型光热偏转光谱法的理论框架,采用棱镜的光色散特性研究了激励光源对待测样品表面周期性照射情况下的探测光偏转角与光热信号之间的解析关系。得到了棱镜型样品表面周期性变化的偏转角表达式。实现结果表明,该方法比传统型光谱法具有理论模型简单、实验容易实现、分辨率高、灵敏度高等优点。
In order to establish the theoretical framework of prism type photothermal deflection spectroscopy, by using the prism optical dispersion characteristics, the analytical relations between the photothermal signal and probe beam deflection angle has been studied when the sample surface to be periodically irradiating by the excitation light source. The expression for the periodically changed deflection angle of prism type sample surface has been obtained. The results show that, this method has a simple theoretical model, high resolution, high sensitivity, and experiment is easy to implement rather than the traditional type of spectroscopy.
出处
《光学与光电技术》
2013年第6期43-46,共4页
Optics & Optoelectronic Technology
基金
国家自然科学基金(11164030)资助项目
