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

Autor: Sinyukov AM; Department of Physics, New Jersey Institute of Technology, Newark, New Jersey 07102, USA., Liu Z, Hor YL, Su K, Barat RB, Gary DE, Michalopoulou ZH, Zorych I, Federici JF, Zimdars D
Jazyk: angličtina
Zdroj: Optics letters [Opt Lett] 2008 Jul 15; Vol. 33 (14), pp. 1593-5.
DOI: 10.1364/ol.33.001593
Abstrakt: 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.
Databáze: MEDLINE