Abstract
Cherenkov phase-matched terahertz (THz) wave generation from a ridge waveguide was studied using optical rectification. Pumping was achieved using 20 and 60 fs laser pulses from a fiber laser centered at 1.56 μm. Time-domain spectroscopy (TDS) results showed a single-cycle pulse with 20 fs pulse pumping and a near-single-cycle pulse with 60 fs pulse pumping. The spectrum covered the range of 0.1–7 THz, with a signal-to-noise ratio of over 50 dB. The output power measured by a Si bolometer and a deuterated triglycine sulfate pyroelectric detector is shown and compared to that of a commercial photoconductive antenna. This system is believed to be a promising THz source for low-cost, compact, robust, and highly integrated TDS, THz imaging, and tomography systems.
© 2013 Optical Society of America
Full Article | PDF ArticleMore Like This
Kiyohide Sakai, Yasuharu Koyata, and Yoshihito Hirano
Opt. Lett. 32(16) 2342-2344 (2007)
Maksim Kunitski, Martin Richter, Mark D. Thomson, Arno Vredenborg, Jian Wu, Till Jahnke, Markus Schöffler, Horst Schmidt-Böcking, Hartmut G. Roskos, and Reinhard Dörner
Opt. Express 21(6) 6826-6836 (2013)
Jian Sun, Yi Gan, and Changqing Xu
Opt. Lett. 36(4) 549-551 (2011)