Title :
Variation of spectral content of subcycle far-infrared pulses due to phase-amplitude modulation in near-field diffraction
Author :
Mitrofanov, O. ; Pfeiffer, L.N. ; West, K.W.
Author_Institution :
Bell Labs., Lucent Technol., Murray Hill, NJ, USA
Abstract :
Spectral content of subcycle electromagnetic pulses is not conserved under phase shift of the carrier with respect to the pulse envelope. We observe carrier-phase dependent large variation of the low frequency content of subcycle far-infrared (terahertz) pulses in the near-field zone of a subwavelength aperture.
Keywords :
high-speed optical techniques; light diffraction; optical modulation; optical phase shifters; phase modulation; far-infrared pulses; near-field diffraction; near-field zone; phase-amplitude modulation; spectral content variation; subcycle far-infrared pulses; subwavelength aperture; terahertz pulses; Apertures; EMP radiation effects; Electromagnetic diffraction; Filtering; Frequency; Optical pulses; Phase modulation; Pulse measurements; Pulse modulation; Space vector pulse width modulation;
Conference_Titel :
Quantum Electronics and Laser Science, 2003. QELS. Postconference Digest
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-749-0
DOI :
10.1109/QELS.2003.238122
