The InSb Auger recombination coefficient derived from the IR-FIR dynamical plasma reflectivity

In order to reproduce the transient IR-FIR reflectivity and transmission due to an intense photo-plasma generated by a fast laser pulse at a frequency above the band gap, we have used a dynamical model of plasma evolution. In this way we have derived both the 'quadratic' and 'cubed' coefficients of the Auger recombination in indium antimonide, by analysing the transient reflectivity at 10.6 μ and 119 μ induced by a fast Nd pulse. In particular we have derived a cubic coefficient of about 7±3x10-26 cm6 s-1, a result larger than those derived in previous experimental works but quite in agreement with the theory. (author)