Polarization shaping of few-cycle terahertz waves

Title
Polarization shaping of few-cycle terahertz waves
Authors
이강희이민우송진동안재욱
Keywords
THz; InAs
Issue Date
2012-05
Publisher
Optics express
Citation
VOL 20, NO 11, 12463-12472
Abstract
We present a polarization shaping technique for few-cycle terahertz (THz) waves. For this, N femtosecond laser pulses are generated from a devised diffractive optical system made of as-many glass wedges, whcih then simultaneously illuminate on various angular positions of a sub-wavelength circular pattern of an indium arsenide thin film, to produce a THz wave of tailor-made polarization state given as a superposition of N linearly-polarized THz pulses. By properly arranging the orientation and thickness of the glass wedges, which determine the polarization and its timing of the constituent THz pulses, we sucessfully generate THz waves of various unconventioal polarization states, such as polarization rotation and alternation between circular polarization states.
URI
http://pubs.kist.re.kr/handle/201004/42410
ISSN
10944087
Appears in Collections:
KIST Publication > Article
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