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

Content Provider	IEEE Xplore Digital Library
Author	Hashimshony, D. Cohen, C. Zigler, A. Papadopoulos, K.
Copyright Year	1999
Description	Author affiliation: Hebrew Univ., Jerusalem, Israel (Hashimshony, D.)
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.
Starting Page	27
Ending Page	32
File Size	397448
Page Count	6
File Format	PDF
ISBN	0306462060
DOI	10.1109/UWBSP.1998.818936
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-06-14
Access Restriction	Subscribed
Rights Holder	Kluwer Academic/Plenum Publ.
Subject Keyword	Pulse measurements Semiconductor lasers Photoconducting devices Finite impulse response filter Frequency conversion Photoconductivity Optical pulse generation Electrostatics Optical pulses Wavelength conversion
Content Type	Text
Resource Type	Article

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