Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Optically controlled terahertz beam steering and imaging

Not Accessible

Your library or personal account may give you access

Abstract

We propose a spatial modulator for terahertz waves based on light induced electron plasma in photo-active semiconductors. A two-dimensional array of computer controlled light is used to create free carries in bulk silicon, which results in a spatial modulation of the transmission at terahertz frequencies. This method not only exhibits a remarkable modulation depth over a broad frequency range but also allows for an optically controlled beam steering of terahertz waves by inducing virtual grating structures. In addition, we analyze the possibility of all-optically controlled terahertz imaging.

©2012 Optical Society of America

Full Article  |  PDF Article
More Like This
Terahertz beam steering using interference of femtosecond optical pulses

Koji Uematsu, Ken-ichiro Maki, and Chiko Otani
Opt. Express 20(20) 22914-22921 (2012)

Focusing and imaging of a virtual all-optical tunable terahertz Fresnel zone plate

Xinke Wang, Zhenwei Xie, Wenfeng Sun, Shengfei Feng, Ye Cui, Jiasheng Ye, and Yan Zhang
Opt. Lett. 38(22) 4731-4734 (2013)

Terahertz single pixel imaging with an optically controlled dynamic spatial light modulator

David Shrekenhamer, Claire M. Watts, and Willie J. Padilla
Opt. Express 21(10) 12507-12518 (2013)

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 Optica member, or as an authorized user of your institution.

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

Figures (7)

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

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

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved