摘要
分析了腔衰荡吸收测量中激光线宽对实验结果的影响和单指数近似的适用范围，提出了衰荡曲线的多项式普适拟合公式。数值模型结果显示吸收较强时多项式拟合可以明显提高测量准确度，从而提高腔衰荡吸收测量的动态范围。
In this report,Laser linewidth effects and the limit of a single exponential fitting in a cavity ring-down (CRD) measurement are discussed.A polynomial fit mode is proposed for CRD absorption measurements.Numerical simulation indicates that the new model reduces the fit error as absorption becomes stronger and increases the dynamic range of a CRD measurement.
基金
国家自然科学基金
