Superheterodyne amplification of optical and terahertz pulses in n-GaN films

Author

Grimalsky, V.V. ; Koshevaya, S.V. ; Zamudio-Lara, A. ; Rapoport, Yu.G.

Author_Institution

CIICAp, Autonomous Univ. of Morelos (UAEM), Cuernavaca, Mexico

fYear

2011

fDate

25-27 Aug. 2011

Firstpage

69

Lastpage

72

Abstract

The superheterodyne amplification of electromagnetic (EM) pulses of optical and terahertz ranges is investigated under the three-wave interaction with the space charge wave (SCW) in n-GaN films. SCW is amplified due to the negative differential conductivity at the frequencies f ≤ 500 GHz. The three-wave resonant interaction of two counterpropagating EM waves with SCW is considered in the waveguides based on n-GaN film onto a dielectric substrate. The amplification of EM pulses of the optical range can reach 20...40 dB at the waveguide lengths ≤100 μm.

Keywords

III-V semiconductors; amplification; gallium compounds; integrated optics; microwave photonics; optical films; optical waveguides; space charge waves; terahertz waves; wide band gap semiconductors; GaN; counterpropagating electromagnetic waves; dielectric substrate; negative differential conductivity; optical pulse; optical waveguides; space charge wave; superheterodyne amplification; terahertz pulses; three-wave resonant interaction; Gallium nitride; Microwave amplifiers; Optical films; Optical waveguides; Stimulated emission; electromagnetic pulses; n-GaN film; negative differential conductivity; space charge wave; superheterodyne amplification;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwaves, Radar and Remote Sensing Symposium (MRRS), 2011

Conference_Location

Kiev

Print_ISBN

978-1-4244-9641-9

Type

conf

DOI

10.1109/MRRS.2011.6053603

Filename

6053603