Transient Response of Electrons and Phonons in ZnTe Crystals

R. Brazis and R. Raguotis Semiconductor Physics Institute, A. Goštauto 11, 01108 Vilnius, Lithuania

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Received: 26 08 2007;

The response of electron and phonon ensemble to the switching on and off electric field E in n-type ZnTe crystals is simulated by Monte Carlo method. The results at T=10 K show significant accumulation of LO-phonons and the LO phonon band population inversion with respect to the LA band;the inversion is necessary for the stimulated transfer of LO-LA energy difference to photons. The maximum inversion is at E=7 kV/cm. At T=300 K no phonon band inversion but fast (sub-picosecond) drift velocity switching with ≈100 GHz repetition is feasible.

DOI: 10.12693/APhysPolA.113.933 PACS numbers: 72.10.Di, 72.20.Ht, 72.15.Lh, 78.45.+h