Increased terahertz emission from thermally treated GaSb
Increased terahertz emission from thermally treated GaSb
Winnerl, S.; Sinning, S.; Dekorsy, T.; Helm, M.
We report on the terahertz emission from GaSb surfaces with modified surface stochiometry. While very weak emission is observed from virgin GaSb wafers, the emission is significantly increased by a single thermal treatment of the wafers. Optimum emission is observed for 500 °C thermal annealing. The reason for the THz emission is a surface electric field induced by thermal decomposition of the surface as corroborated by Raman spectroscopy.
Keywords: Terahertz emission; Raman spectroscopy; surface field; GaSb
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Applied Physics Letters 85(2004)15, 3092-3094
DOI: 10.1063/1.1805197
Cited 21 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-6586