用于高速太赫兹成像和光谱学的太赫兹辐射快速相位调制

Rapid-phase modulation of terahertz radiation for high-speed terahertz imaging and spectroscopy.

作者信息

Sinyukov Alexander M, Liu Zhiwei, Hor Yew Li, Su Ke, Barat Robert B, Gary Dale E, Michalopoulou Zoi-Heleni, Zorych Ivan, Federici John F, Zimdars David

机构信息

Department of Physics, New Jersey Institute of Technology, Newark, New Jersey 07102, USA.

出版信息

Opt Lett. 2008 Jul 15;33(14):1593-5. doi: 10.1364/ol.33.001593.

DOI:10.1364/ol.33.001593

PMID:18628808

Abstract

Rapid voltage-controlled phase modulation of cw terahertz (THz) radiation is demonstrated. By transmitting an infrared beam through a lithium niobate phase modulator the phase of the THz radiation, which is generated by the photomixing of two infrared beams, can be directly modulated through a 2pi phase shift. The 100 kHz modulation rate that is demonstrated with this technique is approximately 3 orders of magnitude faster than what can be achieved by mechanical scanning.

摘要

展示了连续太赫兹（THz）辐射的快速电压控制相位调制。通过将红外光束透射过铌酸锂相位调制器，由两束红外光束光混频产生的太赫兹辐射的相位可以通过2π相移直接调制。用这种技术展示的100kHz调制速率比通过机械扫描所能达到的速率快大约3个数量级。