title: Rapid-phase modulation of terahertz radiation for high-speed terahertz imaging and spectroscopy.
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.
authors.affiliation: Department of Physics, New Jersey Institute of Technology, Newark, New Jersey 07102, USA.
authors.forename: Alexander M
authors.initials: AM
authors.lastname: Sinyukov
authors.forename: Zhiwei
authors.initials: Z
authors.lastname: Liu
authors.forename: Yew Li
authors.initials: YL
authors.lastname: Hor
authors.forename: Ke
authors.initials: K
authors.lastname: Su
authors.forename: Robert B
authors.initials: RB
authors.lastname: Barat
authors.forename: Dale E
authors.initials: DE
authors.lastname: Gary
authors.forename: Zoi-Heleni
authors.initials: ZH
authors.lastname: Michalopoulou
authors.forename: Ivan
authors.initials: I
authors.lastname: Zorych
authors.forename: John F
authors.initials: JF
authors.lastname: Federici
authors.forename: David
authors.initials: D
authors.lastname: Zimdars