Far-Infrared Narrow-Band Photodetector Based on Magnetically Tunable Cyclotron Resonance-Assisted Transitions in Pure n-Type InSb

L.H. Dmowskia, M. Cheremisinb, C. Skierbiszewskia and W. Knapb aHigh Pressure Research Center, Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warszawa, Poland bG.E.S. Université Montpellier II, Pl. Eugene Bataillon, 34060 Montpellier, France

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We present the possibility of using magnetic field to enhance responsivity and to tune spectral range of far-infrared InSb detector (based on photoconductivity effect) beyond its standard range limited to about 30 cm-1. We show that due to cyclotron resonance assisted transitions we can use it as a tunable detector working up to energies about 180 cm-1 (22 meV). We have used such a detector as a spectrometer for measurements of the Landau emission from GaAs emitter.

DOI: 10.12693/APhysPolA.92.733 PACS numbers: 72.40.+w, 78.20.Ls, 78.90.+t