谱导数法在光谱研究GaInAs/InP和GaInP/AlGaInP多量子阱中的应用

Spectroscopic derivative in optical study of GaInAs/InP and GaInP/AlGaInP multiple quantum wells

在简要讨论谱导数法物理机理的基础上 ,给出了其在光吸收谱和光反射谱方法研究张应变GaInAs InP和GaInP AlGaInP多量子阱中的成功应用实例 .比较了不同阶谱导数对测定激子跃迁能量的影响 ,论及了其与双调制谱方法、曲线拟合方法的区别 .指出了谱导数法在光谱研究GaInAs InP和GaInP AlGaInP多量子阱中的重要性和易行性 .

With a brief discussion of the physical mechanism of spectroscopic derivative, t he successful applications are given in optical absorption and reflectivity stud y of Ga xIn 1-xAs/InP and Ga xIn 1-xP/AlGaInP mult iple quantum wells. The effects of different orders of the derivative are compar ed with each other, and the difference is pointed out bet ween this method and the curve-fitting method as well as the double modulation metho d. A conclusion is reached that the method is practical and reliable in the opti cal study of wide band-gap quantum wells.