Title :
A Cherenkov source for freely-propagating terahertz beams
Author :
Fattinger, Christof ; Grischkowsky, Daniel R.
Author_Institution :
IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA
fDate :
12/1/1989 12:00:00 AM
Abstract :
Using a unique cylindrical optical arrangement, the authors have coupled out a Cherenkov electromagnetic shock wave from the confining dielectric substrate and have used this shock wave as a source to produce freely propagating terahertz pulses. The shock wave is initially generated by a surface-dipole distribution propagating faster than the phase velocity in the underlying dielectric substrate
Keywords :
Cherenkov radiation; high-speed optical techniques; light sources; shock waves; substrates; Cherenkov electromagnetic shock wave; Cherenkov source; confining dielectric substrate; cylindrical optical arrangement; freely-propagating terahertz beams; phase velocity; shock wave coupling; shock wave generation; surface-dipole distribution; terahertz pulse source; underlying dielectric substrate; Dielectric substrates; Electromagnetic coupling; Electromagnetic propagation; Electromagnetic scattering; Electromagnetic transients; Optical coupling; Optical propagation; Optical pulses; Shock waves; Submillimeter wave propagation;
Journal_Title :
Quantum Electronics, IEEE Journal of
