In this work, we demonstrate self-referenced spectral domain interferometry for the electro-optic sampling of terahertz (THz) electric fields. This technique allows reduction of the phase noise of the measurement, thus increasing the signal-to-noise ratio (SNR). Using the proposed technique, we achieve a more than sixfold improvement in the SNR of the detected THz electric field.
© 2013 Optical Society of America
Original Manuscript: May 21, 2013
Manuscript Accepted: June 14, 2013
Published: July 23, 2013
Vol. 8, Iss. 9 Virtual Journal for Biomedical Optics
Gargi Sharma, Kanwarpal Singh, Akram Ibrahim, Ibraheem Al-Naib, Roberto Morandotti, François Vidal, and Tsuneyuki Ozaki, "Self-referenced spectral domain interferometry for improved signal-to-noise measurement of terahertz radiation," Opt. Lett. 38, 2705-2707 (2013)