Temperature dependence of the energy gap of InSb using nonlinear optical techniques

Abstract

We report the first use of the resonant two-photon photo-Hall effect as a nonlinear optical technique to measure the temperature dependence of the energy gap of InSb. Values of Eg for the temperature range 2–210 K are determined and compared with theoretical predictions and past experimental work. The technique is shown to provide an accurate, straightforward means of measuring Eg as a function of temperature in semiconductor materials.