Accession Number : ADA324391

Title :   THz Radiation Source through Periodically Modulated Structures.

Descriptive Note : Interim rept. no. 2, Feb-May 96,

Corporate Author : TECHNISCHE UNIV VIENNA (AUSTRIA) INST FUER FESTKOERPERELEKTRONIK

Personal Author(s) : Gornik, Erich

PDF Url : ADA324391

Report Date : AUG 1996

Pagination or Media Count : 3

Abstract : For the first time the technique of Hot Electron Spectroscopy is applied to the study of superlattice transport. Direct current spectroscopy of minibands in a field free, undoped superlattice is demonstrated. Miniband transport through the first and second miniband of three superlattices with different well widths as a function of the hot electron injection energy is observed. The obtained miniband widths and positions agree very well with theoretical calculation. The structure described in this work gives the highest energy resolution reported so far for electron current spectroscopy. A transfer ration of about 25% is obtained with the chosen transistor structure, giving an optimistic outlook for injection structures.

Descriptors :   *SUPERLATTICES, *QUANTUM ELECTRONICS, ELECTRON DENSITY, ELECTRON TRANSPORT, ALUMINUM GALLIUM ARSENIDES, CHARGE CARRIERS, ELECTRIC FIELDS, ELECTRON ENERGY, DIRECT CURRENT, ELECTRON SPECTROSCOPY, AUSTRIA.

Subject Categories : Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE