Abstract

We individually control polarizations of 800 and 400 nm beams, which form a two-color femtosecond plasma filament in air irradiating a linear-to-elliptical THz signal. We detected a threshold-like appearance of THz ellipticity at the angle of ∼85° between the fundamental and second-harmonic field polarization directions. The simulations confirm the abrupt change of THz polarization and reveal that the weak ellipticity of the second harmonic is sufficient to generate essentially elliptical THz radiation.

© 2017 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Polarization of terahertz radiation from laser generated plasma filaments

Daniel Dietze, Juraj Darmo, Stefan Roither, Audrius Pugzlys, James N. Heyman, and Karl Unterrainer
J. Opt. Soc. Am. B 26(11) 2016-2027 (2009)

Terahertz white-light pulses from an air plasma photo-induced by incommensurate two-color optical fields

Mark D. Thomson, Volker Blank, and Hartmut G. Roskos
Opt. Express 18(22) 23173-23182 (2010)

Generation of largely elliptically polarized terahertz radiation from laser-induced plasma

Honggeng Wang, Na Li, Ya Bai, Peng Liu, Zhanshan Wang, and Chengpu Liu
Opt. Express 25(25) 30987-30995 (2017)

More Recommended Articles

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (7)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription