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 language | English |
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Title of host publication | Ultra-Wideband Short-Pulse Electromagnetics 4 |
Editors | Ehud Heyman, Benjamin Mandelbaum, Joseph Shiloh |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 27-32 |
Number of pages | 6 |
ISBN (Electronic) | 0306462060, 9780306462061 |
DOIs | |
State | Published - 1998 |
Event | 4th Conference on Ultra-Wideband Short-Pulse Electromagnetics, UWBSP 1998 - Tel-Aviv, Israel Duration: 14 Jun 1999 → 19 Jun 1999 |
Publication series
Name | Ultra-Wideband Short-Pulse Electromagnetics 4 |
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Volume | 1998-June |
Conference
Conference | 4th Conference on Ultra-Wideband Short-Pulse Electromagnetics, UWBSP 1998 |
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Country/Territory | Israel |
City | Tel-Aviv |
Period | 14/06/99 → 19/06/99 |
Bibliographical note
Publisher Copyright:© 1999 Kluwer Academic/Plenum Publ.