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

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

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

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 2 π 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.

Original languageEnglish (US)
Pages (from-to)1593-1595
Number of pages3
JournalOptics Letters
Volume33
Issue number14
DOIs
StatePublished - Jul 15 2008

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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