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Proceedings Paper

Terahertz gain on inter-valence-band transitions in multilayer delta-doped p-GaAs structures
Author(s): M. V. Dolguikh; A. V. Muravjov; R. E. Peale; D. Bliss; C. Lynch; D. W. Weyburne; W. R. Buchwald
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Paper Abstract

A concept for a terahertz laser in vapor-phase-grown homoepitaxial GaAs with spatially periodic doping profile was theoretically explored. Monte Carlo simulation of hole transport in multilayer delta-doped p-GaAs/GaAs structures in crossed electric and magnetic fields was performed to investigate possibilities of the terahertz amplification on intervalence-band light-to-heavy hole transitions. The results are compared to those calculated for uniformly doped bulk p-GaAs and recently proposed p-Ge/Ge structures. The improvement in the gain for delta-doped p-GaAs structures is about ~2-3 times over bulk p-GaAs. Terahertz laser generation in the considered GaAs device concept appears feasible, as is growth of structures with active thicknesses sufficient to support quasioptical cavity solutions at 100 μm vacuum wavelengths. Potential applications for the considered laser device include sensing of chem/bio agents and explosives, biomedical imaging, non-destructive testing, and communications.

Paper Details

Date Published: 19 May 2006
PDF: 10 pages
Proc. SPIE 6212, Terahertz for Military and Security Applications IV, 621206 (19 May 2006); doi: 10.1117/12.664981
Show Author Affiliations
M. V. Dolguikh, Univ. of Central Florida (United States)
A. V. Muravjov, Univ. of Central Florida (United States)
R. E. Peale, Univ. of Central Florida (United States)
D. Bliss, Air Force Research Lab. (United States)
C. Lynch, Air Force Research Lab. (United States)
D. W. Weyburne, Air Force Research Lab. (United States)
W. R. Buchwald, Air Force Research Lab. (United States)


Published in SPIE Proceedings Vol. 6212:
Terahertz for Military and Security Applications IV
Dwight L. Woolard; R. Jennifer Hwu; Mark J. Rosker; James O. Jensen, Editor(s)

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