Abstract

Recently, there has been a renewed interest in the study of absorption spectrum, particularly in the absorption tail region due to the possibility of using the semiconductor etalons for optical bistability. It has been shown that both the dispersive and absorptive optical bistability are possible in semiconductors. However, it is very difficult to obtain absorption saturation in the tail region.¹ Therefore, it is very important to study the mechanism of formation, and the density of states distribution in the absorption tail region.

© 1991 Optical Society of America