CAJ | 학술논문

采用棱镜的光色散特性建立了棱镜型光热偏转光谱法的理论框架，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，探讨了调制频率，样品表面和探测光之间的距离对输出信号强度的影响。结果表明，该方法比传统型光谱法具有理论模型简单、试验容易实现、分辨率高、灵敏度高、测量方便快捷等优点。
채용릉경적광색산특성건립료릉경형광열편전광보법적이론광가，연구료격려광원대대측양품표면주기성조사정황하적탐측광편전각여광열신호지간적해석관계。득도료릉경형양품표면주기성변화적편전각표체식，탐토료조제빈솔，양품표면화탐측광지간적거리대수출신호강도적영향。결과표명，해방법비전통형광보법구유이론모형간단、시험용역실현、분변솔고、령민도고、측량방편쾌첩등우점。
By using the prism optical dispersion characteristics, establish the theoretical framework of prism type photothermal deflection spectroscopy,the analytical relations between the photothermal signal and probe beam de-flection 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. Dis-cuss the affect of distance between the probe beam and sample surface to intensity of output signal.The results show that, This method has a simple theoretical model, high resolution, high sensitivity, the measurement was more conve-nient and faster, and experiment is easy to implement rather than the traditional type of spectroscopy.