Light-induced terahertz optical activity
Optics Letters, Vol. 34, Issue 19, pp. 3000-3002 (2009)
http://dx.doi.org/10.1364/OL.34.003000
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Abstract
We propose and demonstrate a simple method to induce optical activity in the terahertz (THz) region using photoexcited carriers in a semiconductor substrate with metal two-dimensional chiral masks, which does not show optical activity without photoexcitation. The three-dimensional chirality induced by the combination of photocarriers and metal mask gives rise to the optical activity. With this simple method, we can develop THz polarization modulation techniques applicable for biology, chemistry, and material sciences.
© 2009 Optical Society of America
OCIS Codes
(120.2130) Instrumentation, measurement, and metrology : Ellipsometry and polarimetry
(160.1585) Materials : Chiral media
(310.5448) Thin films : Polarization, other optical properties
(300.6495) Spectroscopy : Spectroscopy, teraherz
ToC Category:
Materials
History
Original Manuscript: July 1, 2009
Revised Manuscript: August 18, 2009
Manuscript Accepted: September 1, 2009
Published: September 29, 2009
Virtual Issues
Vol. 4, Iss. 12 Virtual Journal for Biomedical Optics
Citation
Natsuki Kanda, Kuniaki Konishi, and Makoto Kuwata-Gonokami, "Light-induced terahertz optical activity," Opt. Lett. 34, 3000-3002 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-19-3000
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