Abstract
The magnetic tuning characteristics of InSb laser pumped by a TE CO2. laser were studied.The tuning characteristic depended on the carrier density of n-InSb sample. For a sample with low carrier density, the emission energy shifted monotonously to higher energy with increasingmagnetic field and only one linear shift varying as Δε=(\\hbarωc-|gc|βH)/2 was o bserved at a high magnetic field. For a sample with high carrier density, the emission energy shifted to lower energy at a low magnetic field, and at a high magnetic field two linear shifts with differentrates to higher energy varying as Δε=(\\hbarωc±|gc|βH)/2 were observed. The polarization and the intensity of emission were also investigated. The zero-field emission energy was measured for samples with different carrier densities. A simple transition model is proposed, which can explain the observed magnetic tuning characteristics.
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