Demonstration of submillimeter radiation generation from static field by superluminous ionization front in semiconductor capacitor array

D. Hashimshony, C. Cohen, A. Zigler, K. Papadopoulos

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Generation of frequency upshifted monochromatic radiation in the 100 GHz to FIR range by the interaction of a superluminous photoconducting front with an electrostatic «frozen wave» configuration in a semiconductor is reported. The interaction converts the energy contained in the «frozen wave» into monochromatic radiation, whose frequency depends on the energy in the laser pulse creating the superluminous front and the wavelength of the static wave. Monochromatic free space propagating waves with frequency between 100 GHz and 1.6 THz were generated using a 100 fsec Ti:sapphire laser pulse incident obliquely on a ZnSe photoconducting slab containing a frozen wave field. A superluminous photoconducting front was formed by two photon absorption. Tunability was achieved by varying the laser pulse energy from.1 to 1 mJ. The electric field waveform of the emitted radiation pulse was measured by an optically gated miniature dipole antenna. The concept can be scaled to develop narrowband, tunable and powerful THz and FIR sources for spectroscopic imaging and other applications.

Original languageEnglish
Title of host publicationUltra-Wideband Short-Pulse Electromagnetics 4
EditorsEhud Heyman, Benjamin Mandelbaum, Joseph Shiloh
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages27-32
Number of pages6
ISBN (Electronic)0306462060, 9780306462061
DOIs
StatePublished - 1998
Event4th Conference on Ultra-Wideband Short-Pulse Electromagnetics, UWBSP 1998 - Tel-Aviv, Israel
Duration: 14 Jun 199919 Jun 1999

Publication series

NameUltra-Wideband Short-Pulse Electromagnetics 4
Volume1998-June

Conference

Conference4th Conference on Ultra-Wideband Short-Pulse Electromagnetics, UWBSP 1998
Country/TerritoryIsrael
CityTel-Aviv
Period14/06/9919/06/99

Bibliographical note

Publisher Copyright:
© 1999 Kluwer Academic/Plenum Publ.

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