Abstract
The interaction of electrons and polar-optical phonons is investigated for CdTe and InP in cylotron resonance (CR) emission and absorption experiments. Under hot electron conditions three different Landau level transitions are observed. From the positions of the fundamental transition and the CR line splittings the nonparabolicity and the polaron contribution to the effective mass are analysed using a variational approach for the polaron shifts. The bare band edge masses and the polaron coupling constants are determined to be m ∗ 0 = 0.0900±0.0005 , α=0.35+-0.03 for CdTe and m ∗ 0 = 0.0765±0.0005 , α=0.15±0.01 for InP.
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